Stock JB unlock and custom recovery considerations - Transformer TF300T General

First of all, I like to share I am not a stranger with rooting, flashing, granting bootloader access (not an tablets, but on HTC an SE WM phones in the past (assuming the S-off/S-on switching is somewhat comparable)). Despite not being a stranger, I am no whizzkid either, it's just that I am able to read instructions well, re-read them and carefully follow the instructions step by step. During the process I have reasonable understanding of what I am doing, but I am not someone that could have 'invented' such workflows and adjustments myself.
So, what is new for me? Installing a custom recovery. I haven't done that before. No problem, because I know there are enough techs on XDA that have the great quality to share their knowledge, something I appreciate very much and use regularly.
My story:
Asus created a situation in which you have to register your device and actively decline your warranty, whenever you want to unlock the bootloader. This is why I didn't do that yet. Now, having my TF300 for almost 6 months, reasonably comfortable with the feeling there will be no issues to need the warranty, I am willing to unlock my bootloader and void my warranty. However, shortly after the JB OTA I read a lot of messages that this was not possible with a TF300 on JB. Later I read it might be possible, but that changing the bootloader was not possible. Then I read this was possible too, but you could only install roms based on official Asus JB OTA.
Well... I guess things have evolved since the initial JB OTA, but I am not sure that I understood things well enough to just give it a try (yet). So I am looking for confirmation and a bit more in depth info. First I will summarize my TF300's history in detail and things I found so far regarding custom recovery. In this way you know what the situation is and I also hope this post becomes 'informative' for other TF300 owners too, besides being a question topic for me only.
Ok, what do I have:
- An original TF300T (no dock), bought in June 2012 with stock ICS
- Granted myself root access via 1-Click Transformer Root
- All original Asus OTA's applied, including the upgrade to JB (and succeeding OTA's)
- Still have root (kept root during all OTA's, including upgrade to JB with help from Voodoo OTA rootkeeper)
- Recently wiped/factory reset my device (still have root)
What I used in the past, but currently not running on the tablet:
- Used different Custom build.props on ICS and JB, but now have stock build.prop again
- Used SwitchMe profile manager (still want it, but waiting on decision to possibly unlock/install custom recovery first)
- Used browser2ram (don't want to need it anymore, but ability to boost performance with a custom rom will be a requirement)
What custom recovery options did I see? There are 3 of them and all seem to be safe with the TF300 JB OTA:
- TWRP 2.3.1.0
- CWM 6.0.1.3 / 5.5.0.4 (don't know why it has 2 version numbers... ICS and JB version?)
- Clockworkmod 6.0.1.4 Touch (same as CWM 6.0.1.3 but with touch functionality?)
Ok, what do I want confirmed to be sure enough to give it a shot on my TF300 without bricking?
- Is it possible to use official Asus unlock tool on a stock OTA JB TF300? If possible:
- Are above mentioned custom recovery options indeed safe to run on a (unlocked) stock OTA JB TF300? If safe:
- What is (technical) the best custom recovery option? Or are the mentioned options mostly identical and is it a matter of personal preference?
- Can I run any roms after installing a custom recovery or am I restricted to roms based on official Asus JB?
- What will happen with root access after (if possible) installing a custom recovery? And after installing a custom rom?
These are my major 'need to knows' before I dare....
Besides this information, I am curious if someone can confirm my representation of (or explain) the different parts in Android/Asus installation and how it is affected by a custom recovery. During reading along the forums, I have created this visualization of the different parts of the system:
1. Bootloader or kernel (first thing on system, somewhat comparable with a PC BIOS? Are the terms bootloader and kernel interchangeable?)
2. Asus recovery/boot options or custom recovery (custom recovery replace the standard Asus recovery/boot options, I assume)
3. Android (stock JB/ICS or custom rom)
Is this a correct representation?
Well, that was all... Hopefully my post didn't become a TLDR and some of you are willing to help me out. I am very thankful in advance!

1. Bootloader is something else then a kernel. You just have to have the right kernel for the 2 different bootloader
2. Boot options are in the bootloader. Stock Recovery has no options.
3. dont understand your question
1st if you are still on ICS I would recommend to use NVflash and create the needed NVflash files. After that your tablet is nearly unbrickable and you are able to NVflash back to the ICS bootloader (my opinion not so importent anymore, caus even CM is now compatible with the JB Bootloader)
2nd If you are still on ICS I would use the unlock app on ICS not on JB and would then flash the JB update.
The Custom Recovery is best right now would be TWRP 2.2. Its the only one with no known issues.
Hope that helps a little and hope that my explanations are correct, because I am just a flasher like you
Last but not least. The best ROMs out there in my opinion are the Clean Rom 2.5 for the TF700 with clemsyns Kernel and BlueAndroid V.1.0.

Thank you for your reply, it helps me a bit. Unfortunately it doesn't answer my major questions, but I don't blame you (not at all). Every bit of help is welcome.
mikaole said:
1. Bootloader is something else then a kernel. You just have to have the right kernel for the 2 different bootloader
Click to expand...
Click to collapse
Ok... clear... but then.. what is a kernel...? (*feeling noob*)
mikaole said:
2. Boot options are in the bootloader. Stock Recovery has no options.
Click to expand...
Click to collapse
Ok, so what happens if I install a custom recovery? Does it replace the bootloader with a different one that includes recovery options? Or does it add recovery options to the existing bootloader?
mikaole said:
3. dont understand your question
Click to expand...
Click to collapse
The numbers (1, 2 and 3) were the 'layers' I imagined on how Android is build up from boot to OS, where 3 being the final layer (Android OS presented to the user on screen).
mikaole said:
1st if you are still on ICS I would recommend to use NVflash and create the needed NVflash files. After that your tablet is nearly unbrickable and you are able to NVflash back to the ICS bootloader (my opinion not so importent anymore, caus even CM is now compatible with the JB Bootloader)
2nd If you are still on ICS I would use the unlock app on ICS not on JB and would then flash the JB update.
Click to expand...
Click to collapse
That's the point why I started this topic, I am on (stock OTA) JB already. If I was still on ICS, I would have had the guts to unlock and install custom recovery. I am hesitating because I read about issues with JB and unlocking/installing custom recovery.
mikaole said:
The Custom Recovery is best right now would be TWRP 2.2. Its the only one with no known issues.
Click to expand...
Click to collapse
Thanks for the tip, I will keep this in mind.
mikaole said:
Hope that helps a little and hope that my explanations are correct, because I am just a flasher like you
Click to expand...
Click to collapse
*shakes hands* Yes, it helped a bit.
mikaole said:
Last but not least. The best ROMs out there in my opinion are the Clean Rom 2.5 for the TF700 with clemsyns Kernel and BlueAndroid V.1.0.
Click to expand...
Click to collapse
Thank you, I will consider this when I am ready to search for custom roms.
@all: Is there someone out there that can (and is willing to) answer my 'major' questions? I will re-post them below:
Ok, what do I want confirmed to be sure enough to give it a shot on my TF300 without bricking?
- Is it possible to use official Asus unlock tool on a stock OTA JB TF300? If possible:
- Are above mentioned custom recovery options indeed safe to run on a (unlocked) stock OTA JB TF300? If safe:
- What is (technical) the best custom recovery option? Or are the mentioned options mostly identical and is it a matter of personal preference?
- Can I run any roms after installing a custom recovery or am I restricted to roms based on official Asus JB?
- What will happen with root access after (if possible) installing a custom recovery? And after installing a custom rom?

Ok, what do I want confirmed to be sure enough to give it a shot on my TF300 without bricking?
- Is it possible to use official Asus unlock tool on a stock OTA JB TF300? If possible:
- Are above mentioned custom recovery options indeed safe to run on a (unlocked) stock OTA JB TF300? If safe:
- What is (technical) the best custom recovery option? Or are the mentioned options mostly identical and is it a matter of personal preference?
- Can I run any roms after installing a custom recovery or am I restricted to roms based on official Asus JB?
- What will happen with root access after (if possible) installing a custom recovery? And after installing a custom rom?
Yes the unlock tool works on JB as well as ICS. I used it while on JB.
Recovery choose one for JB since you have said you were on JB. In fact that is how you will determine which roms you can use as well (JB).
There have been many complaints posted about problems with CWM on this device.
Safe is something I can't answer - twrp itself appears to be safe but that is relative.
One mistake can usually be overcome (or one weird issue); add a mistake to that and you are out at two strikes with this unit most of the time. That is the way I see it after reading hundreds of posts.
You must have recovery, adb, or fastboot working to recover from a problem with this unit.
Before you make any changes make sure adb and fastboot work.
When you flash a rom make sure early in the game you turn on usb debugging in developer options. Learn to get into and use the bootloader menu for adb, fastboot, and recovery access. This would be with both stock recovery and twrp.
Custom roms are usually by default rooted. With a custom recovery you can flash root at will.
It is long but I feel I touched on each of your questions, if not ask.

If your phone is a ferrari, the kernel is the "driver" ... the kernel you use can be tweaked to allow you to overclock your process. By default, overclocking is not possible (usually) on stock kernels because phone makers don't want you effing up your phone.
Other kernels can let you run "low voltage" or "ultra low voltage" settings for the processor. This allows you to send less power to the processor but still get the same amount of oomph out. The result is greater battery life, and no cost to performance. Obviously this can be dangerous to some hardware... so be careful and know what you're doing. It can be as bad as damaging hardware, or as minor as getting your phone stuck in a boot loop. DO A BACKUP with Rom Manager before installing a kernel. Always do a backup before you do anything to your phone.

moisaal said:
If your phone is a ferrari, the kernel is the "driver" ... the kernel you use can be tweaked to allow you to overclock your process. By default, overclocking is not possible (usually) on stock kernels because phone makers don't want you effing up your phone.
Other kernels can let you run "low voltage" or "ultra low voltage" settings for the processor. This allows you to send less power to the processor but still get the same amount of oomph out. The result is greater battery life, and no cost to performance. Obviously this can be dangerous to some hardware... so be careful and know what you're doing. It can be as bad as damaging hardware, or as minor as getting your phone stuck in a boot loop. DO A BACKUP with Rom Manager before installing a kernel. Always do a backup before you do anything to your phone.
Click to expand...
Click to collapse
+1

tobdaryl said:
Ok, what do I want confirmed to be sure enough to give it a shot on my TF300 without bricking?
- Is it possible to use official Asus unlock tool on a stock OTA JB TF300? If possible:
- Are above mentioned custom recovery options indeed safe to run on a (unlocked) stock OTA JB TF300? If safe:
- What is (technical) the best custom recovery option? Or are the mentioned options mostly identical and is it a matter of personal preference?
- Can I run any roms after installing a custom recovery or am I restricted to roms based on official Asus JB?
- What will happen with root access after (if possible) installing a custom recovery? And after installing a custom rom?
Yes the unlock tool works on JB as well as ICS. I used it while on JB.
Recovery choose one for JB since you have said you were on JB. In fact that is how you will determine which roms you can use as well (JB).
There have been many complaints posted about problems with CWM on this device.
Safe is something I can't answer - twrp itself appears to be safe but that is relative.
One mistake can usually be overcome (or one weird issue); add a mistake to that and you are out at two strikes with this unit most of the time. That is the way I see it after reading hundreds of posts.
You must have recovery, adb, or fastboot working to recover from a problem with this unit.
Before you make any changes make sure adb and fastboot work.
When you flash a rom make sure early in the game you turn on usb debugging in developer options. Learn to get into and use the bootloader menu for adb, fastboot, and recovery access. This would be with both stock recovery and twrp.
Custom roms are usually by default rooted. With a custom recovery you can flash root at will.
It is long but I feel I touched on each of your questions, if not ask.
Click to expand...
Click to collapse
Thank you for this clear answer. Allow me to summarize your answer (actually it is a confirmation request to see if I fully understand your answer):
- Asus unlock tool is working fine on JB, no problems
- Since my TF300 is on JB and to stay on the safe side (no guaranties) your advice is to use TWRP 2.3.1.0 for JB (to use the JB version is obvious for me, thanks for confirming)
- Once these steps are done (unlock and custom recovery) , I can flash roms at will, but have to keep in mind to use JB-based roms
Did I summarize (and thus understand) your answer correct?
Thanks for pointing out to have adb and fastboot working before making changes and to learn to get into and use bootloader menu for adb, fastboot and recovery access (with both stock recovery and twrp). I am very much aware of this, but it is always wise to make that clear to anyone whom wants to play with this stuff.
You helped me very much! To be complete sure, I'll wait for confirmation, but then I have more than enough confidence to give it a go (Yes, I will beware it won't exaggerate into over-confidence and I become sloppy . I'll stay punctual and cautious during the process.).

moisaal said:
If your phone is a ferrari, the kernel is the "driver" ... the kernel you use can be tweaked to allow you to overclock your process. By default, overclocking is not possible (usually) on stock kernels because phone makers don't want you effing up your phone.
Click to expand...
Click to collapse
Can I see the kernel somewhat equal to the bios on a pc, or is that a misinterpretation?
If I understood it correct, then it is not fully comparable to a pc bios, as on Android the kernel also determines which version of Android is able to run on your device (ICS needs another kernel than JB), right?

ralph075 said:
Can I see the kernel somewhat equal to the bios on a pc, or is that a misinterpretation?
Click to expand...
Click to collapse
BIOS (basic input-output system, or something along those lines) is loaded before the kernel! They are different. The kernel acts as a mediator between hardware and software.
Trimis de pe Motorola Defy

vap_66 said:
BIOS (basic input-output system, or something along those lines) is loaded before the kernel! They are different. The kernel acts as a mediator between hardware and software.
Click to expand...
Click to collapse
Thanks for clarifying. I found this article and read it to learn more... (I had a few questions again, but realized that there probably would be something to read in here that could answer those questions too... )

Did I summarize (and thus understand) your answer correct?
Yes that is correct.

tobdaryl said:
Did I summarize (and thus understand) your answer correct?
Yes that is correct.
Click to expand...
Click to collapse
Thanks again, now the challenge is to find some spare time this weekend

ralph075 said:
Thanks again, now the challenge is to find some spare time this weekend
Click to expand...
Click to collapse
Good Luck!
Go slow and enjoy your new tab.

tobdaryl said:
Good Luck!
Go slow and enjoy your new tab.
Click to expand...
Click to collapse
Thank you. Well, slow it will go, as last weekend didn't have any spare time...
Hopefully I will experience my new tab soon...

ralph075 said:
Thank you. Well, slow it will go, as last weekend didn't have any spare time...
Hopefully I will experience my new tab soon...
Click to expand...
Click to collapse
You're very welcome.
Yes, it seems time to play is sporadic and limited.
Life would probably be very boring if we always had time.

Related

How doi I get to ICS?

In December, when I picked up my TF101, I used Razorclaw + CWM to root it. I also found some kind of an update here that I applied that allowed me to overlock the device .. I believe it was a form of kernel patch?
I would like to go to ICS. I need to be rooted after ICS though, we have a VPN client for our SonicWall firewall that requires the OS to be rooted. I would also prefer an ICS port that supports overclocking like my current build .. it's been incredibly useful to clock up in to the 1400s as it makes everything run so much better.
Is it possible to upgrade to the stock ICS, root it easily and patch it to allow for overclocking at this time? If so, could someone direct me to a guide that shows what the easiest way to do this is, since I already have CWM in (although can't remember how to get it to come up on boot .. doh)?
Thanks =)
Wait till Asus fix the problems.
Yea dont install ICS, it would be like pouring water over your PC
It might seem fun at the time, but its really not a good idea
I would say it is a very bad idea. Avoid it. I did it and literally my tablet is unusable now because of
Slow response
Random rebooted
Random no message crash of apps like gmail.
Dead slow,app response
white screen on app loading
It is now embarrassing infront of ipad users.
Sent from my Transformer TF101 using Tapatalk
spinaldex said:
In December, when I picked up my TF101, I used Razorclaw + CWM to root it. I also found some kind of an update here that I applied that allowed me to overlock the device .. I believe it was a form of kernel patch?
I would like to go to ICS. I need to be rooted after ICS though, we have a VPN client for our SonicWall firewall that requires the OS to be rooted. I would also prefer an ICS port that supports overclocking like my current build .. it's been incredibly useful to clock up in to the 1400s as it makes everything run so much better.
Is it possible to upgrade to the stock ICS, root it easily and patch it to allow for overclocking at this time? If so, could someone direct me to a guide that shows what the easiest way to do this is, since I already have CWM in (although can't remember how to get it to come up on boot .. doh)?
Thanks =)
Click to expand...
Click to collapse
Ignore the fear mongering posters.
Tons of people are using ICS without issues. But yes, some do experience issues.
Since you have CWM, you can directly flash the pre-rooted stock ICS. http://forum.xda-developers.com/showthread.php?t=1552303 This is the latest 9.2.1.17 version.
If you want to overclock, you can flash custom ICS ROMs that support overclocking. There's only 2 at the moment, Team EOS and Codename Android.
Frequently updated custom ICS roms such as Team EOS and CM9 tend to be very stable and have fixes that stock ICS doesn't have, so flash a custom ROM instead of the stock ROM if you are concerned about possible issues.
As always, do factory reset + clear cache + clear dalvik cache within CWM before flashing the stock ROM or any custom ROM.
To be safe, I would update your CWM to the latest version here http://forum.xda-developers.com/showthread.php?t=1213723 before flashing anything.
horndroid said:
Ignore the fear mongering posters.
Tons of people are using ICS without issues. But yes, some do experience issues.
Since you have CWM, you can directly flash the pre-rooted stock ICS. http://forum.xda-developers.com/showthread.php?t=1552303 This is the latest 9.2.1.17 version.
If you want to overclock, you can flash custom ICS ROMs that support overclocking. There's only 2 at the moment, Team EOS and Codename Android.
Frequently updated custom ICS roms such as Team EOS and CM9 tend to be very stable and have fixes that stock ICS doesn't have, so flash a custom ROM instead of the stock ROM if you are concerned about possible issues.
As always, do factory reset + clear cache + clear dalvik cache within CWM before flashing the stock ROM or any custom ROM.
To be safe, I would update your CWM to the latest version here http://forum.xda-developers.com/showthread.php?t=1213723 before flashing anything.
Click to expand...
Click to collapse
Terrible advise.
Why tell someone to update to an OS that has literally flooded XDA and other forums, and ASUS's facebook page with people saying their TF is no longer usable ?
For the sake of waiting for a working update, why suggest doing something that could very well turn their TF into a buggy POS ?
There is nothing in ICS that is worth the risk
*Detection* said:
Terrible advise.
Why tell someone to update to an OS that has literally flooded XDA and other forums, and ASUS's facebook page with people saying their TF is no longer usable ?
For the sake of waiting for a working update, why suggest doing something that could very well turn their TF into a buggy POS ?
There is nothing in ICS that is worth the risk
Click to expand...
Click to collapse
There are just as many people, probably much much more, who aren't having problems.
Besides, have you tried any custom ROMs? If not, stfu.
I would no say my TF is unusable under ICS.
It works fine, apart from not so random reboots, as it reboots mainly in the morning when I wake it up form the night...
maybe the Sleeping Beauty requires a kiss from the Prince ...
By the way, it used to be really better under HoneyComb, I wish i could have refused that damned firmware upgrade ...
If I were you I'd rather wait as an other poster said for a really proven Stable version from Asus
Nickola
horndroid said:
There are just as many people, probably much much more, who aren't having problems.
Besides, have you tried any custom ROMs? If not, stfu.
Click to expand...
Click to collapse
Who the F are you telling to stfu ?
Of course I have tried custom ROMs you doosh, I just prefer to have a stock TF, well, I did until ASUS decided to send out buggy sh**
*Detection* said:
Who the F are you telling to stfu ?
Of course I have tried custom ROMs you doosh, I just prefer to have a stock TF, well, I did until ASUS decided to send out buggy sh**
Click to expand...
Click to collapse
If you are using one of the better custom ICS roms and still having such bad issues, the problem is you and your apps since those AOSP roms aren't even based on Asus's ICS.
The OP has root and CWM, and wants to overclock. So how was it a bad advice to recommend a custom ICS rom?
Just because you are having issues, doesn't mean everyone else will.
I've never had any issues at all and I just got done testing like 5 different ROMs. No issues whatsoever. Probably because I do it correctly and do a full wipe including format /system before I flash anything.
I've got issues on Stock and I did a full wipe using voldn+power method and this was before I rooted. I also lost sound randomly on Stock, and the custom kernels I still get reboots but my sound for the main part does work.
So, if the OP needs their tablet to work correctly then wait, if it's not that important to them and they don't need for day to day tasks then take a chance, you might get lucky or you might be causing yourself a headache, up to you.
horndroid said:
If you are using one of the better custom ICS roms and still having such bad issues, the problem is you and your apps since those AOSP roms aren't even based on Asus's ICS.
The OP has root and CWM, and wants to overclock. So how was it a bad advice to recommend a custom ICS rom?
Just because you are having issues, doesn't mean everyone else will.
I've never had any issues at all and I just got done testing like 5 different ROMs. No issues whatsoever. Probably because I do it correctly and do a full wipe including format /system before I flash anything.
Click to expand...
Click to collapse
How is the problem me when I am doing everything the "ASUS way" ?
The problem is ASUS and their code.
If you read the OP's actual post, you will see this line
"Is it possible to upgrade to the stock ICS"
And if you want to go even further into it, your line "Probably because I do it correctly and do a full wipe including format /system before I flash anything"
I don't think you can get a cleaner flash than NVFLASH, which is how I always flash my ROMs

[UPDATED] [17/06/12] Rooting, Recovery, Custom ROMs and Troubleshoot!

Okay, so I read many new threads daily regarding how to root, about custom ROMs and everything so I thought I would just start this thread where we all could share what all we know. Something like FAQs for SGN. Without further delay, let's start.
1. What is rooting? Is it dangerous?
A. “Rooting” your device means obtaining “superuser” rights and permissions to your Android phone. When rooted, the user can run various apps that require root permissions to run and also, it allows the user to install custom ROMs or to flash various kernels, overclocking or underclocking the device etc.
Rooting is NOT dangerous. There are guides available here on XDA on how to root and they are pretty easy, straightforward and risk free.
The only disadvantage of rooting is that it voids your warranty but you can easily unroot your phone to get the warranty back.
2. How to root?
A. Pretty easy! Dr Ketan has created this very very simple guide on how to root. You can find it here.
http://forum.xda-developers.com/showthread.php?t=1329360
Don't forget to thank him!
Easiest method in my opinion is to flash a pre rooted stock ROM through PC Odin.
3. How do I unroot?
It's mentioned in the guide above.
4. What is recovery?
A. Recovery refers to the dedicated, bootable partition that has the recovery console installed. A combination of key presses will boot your phone to recovery, where you can find tools to help repair (recover) your installation as well as install official OS updates. Now because Android is open and has the recovery source code available, building a customized version with more and different options is relatively easy as well.
5. ClockWorkMod Recovery??? How do I install it?
A. CWM, as it is generally called, is a custom recovery for Android. It offers many more options than those offered by the stock recovery and it's generally used to flash custom ROMs.
Installing CWM on your phone is dead simple. Again, thanks to Dr Ketan for his awesome guide. Here you go.
http://forum.xda-developers.com/showthread.php?t=1329360
6. What is a custom ROM?
A. A custom ROM is a fully standalone version of the OS, including the kernel (which makes everything run), apps, services, etc - everything you need to operate the device, except it's customized by someone in some way.
Since Android is open source, developers are free to pick up the stock ROMs and modify them the way they like. As simple as that!
7. So how do I decide which is the best custom ROM?
A. There in no best custom ROM as such. Different ROMs have different advantages and disadvantages. Some give you incredible speed, some give you battery, some are better looking and so on. You have to decide what works best for you.
8. Do I really need to install a custom ROM or is stock good enough?
A. Ask yourself! Personally, I feel stock is crap. Also, there are many ROMs that offer stock experience whilst removing everything that makes the stock ROM crap.
9. Can I brick my phone while installing custom ROMs?
A. Yes and no. While it's pretty hard to actually brick a phone, it's possible. Use the CORRECT files and follow the steps as mentioned by the developer. But, as I said, it's highly unlikely that you'll end up with a bricked phone.
10. Okay, so I am ready to install a custom ROM. I know the risks and everything. How do I install it?
A. First of all, you need your phone to be rooted and you also need to have a recovery, like CWM. Now, different ROMs have difference installation procedures so I advice you to just read their respective threads thoroughly, know more about the ROM, decide if it's good enough and follow what the developer says. Use the CORRECT files.
Also, whatever you do, make sure you make backups of your current system through CWM. If ever something goes wrong, these backups will help you restore to your previous system.
Go on, it should all be easy!
Edit: Do not make Nandroid backups in CWM when on LPY, LPF, i9220 repack or other unsafe kernels. There's a very high risk of bricking your phone. Read the stickies!
11. What is Overclocking/Underclocking?
A. Simply put, overclocking is the process of increasing the clock frequency of your phone's processor. Underclocking is decreasing the frequency. It basically makes the processor run faster/slower according to what you set it for.
12. Risks of OC?
A.
Overclocking reduces the lifespan of the hardware of your phone.
It's possible to incurr permanent damage to the phone's compenets by OC.
Overclocking voids the warranty of your phone, but rooting has already done that!
13. Should I overclock?
A. Personally I think there is no use of OC except to fry off your processor and get higher quadrant score (which doesn't mean anything really!). With all these phones with fast processors, OC is less necessary.
14. How to overclock?
A. You need a kernel that supports overclocking. Like franco's kernel supports OC I think. Then you need an application (like SetCPU, No Frills CPU etc) to OC your device. Sometimes, OC options are built into a custom ROM as well.
15. I've had enough of rooting and custom ROMs. I need to go back. What do I do?
A. The easiest way to go back to stock ROM is to just simply flash any of the unrooted stock ROMs through PC Odin. As simple as that. Refer to Dr Ketan's guide for this.
16. What is an unsafe kernel?
A. Most stock ICS kernels are affected by the emmc bug, popularly known as the brick bug. The official CM9 kernels and some new other kernels are although free from this.
17. F***! I am on an unsafe kernel. What to do?
A. You should actually firstly know what not to do and than what to do. DO NOT wipe data in CWM, DO NOT factory reset your phone through either recovery or the Settings Menu and DO NOT delete big files from your internal or maybe even external memory. This heavy R/W operations triggers the brick bug and most often leaves the phone as useful as a paperweight.
Now, what should you be doing? If you're not gonna do any of the above, you're most probably as safe as those on a safe kernel. If you wanna get rid of this emmc bug altogether, you have to firstly go back to GB, use PC Odin method as stated above and then flash any of the new ROMs with safe kernels, read the dev section.
18. I wiped my data previously on an unsafe kernel and now my phone wouldn't boot up. I tried going back to stock GB with the PC Odin method but I'm stuck at "factoryfys.img". OMG! I can't even breathe now.. HELP!!!!
A. Superbrick. Yes, that's the word. Unfortunately, your phone is now bricked and only Samsung could help you now. Or if you're comfortable you can read and watch the DIY guides to replace the affected parts (motherboard).
So, this is all what I could think of at the moment. If you have any more Q&A that could help others, do add them!
Hope this helps..
Good one bro! It should help most of the folks out there! And quench many repeated questions
Thanks man!
Sent from my GT-N7000 using XDA
sujal said:
Thanks man!
Sent from my GT-N7000 using XDA
Click to expand...
Click to collapse
Its better to hit the thanks button than posting a post of thanks LOL
Cheers!! Enjoy your Note!!
Like that!
Sent from my GT-N7000 using XDA
By the way, I was wondering if the moderators could make this thread a sticky. Possible?
Sent from my GT-N7000 using XDA
Just Arrived
I am a burnt newbie. I tried to install a ROM from RootGalaxyNote that seemed perfect. A week later, after getting it back from MobileTechVideo and a full JTAG repair, I laid back on everything. Then I ran across Philz. Love what this guy does. Rooted the kernel MobileTech installed, and installed the Rom I'm using now, SweetROM V2.5. Hope this posts as I am 7 away from being able to talk to the"Big Boys".
Choosing a Kernal for your phone
I looked through PhilZ-cwm6 - Safe Stock Based Kernel but couldn't find anything that matches my kernal version. I honestly do not know where to ask so I hope you don't mind me asking you for your help. What kernal version do I download if this is my phone details:
Model number:
GT-N7000
Android version:
4.1.2
Baseband version:
N7000WELSA
Kernel version:
3.0.31-906371
[email protected]#3
SMP PREEMPT Mon Feb 18 15:19:46 KST 2013
Build number:
JZO54K.N7000UBLSF
You can try the XXLSA or XXLT4.

Is updated bootloader needed

Hey guys what's up sorry I'm sure there are other threads about this but I haven't been able to find one to answer me directly....is the updated ics sandwich boot loader necessary I was able to flash flexreapers and lightspeed's ics custom rooms without it? So is it really needed does it make it faster update cmw or just allow recovery boot menu and dual boot I'm at a lost on weather its neccesary or not thanks once again
It will be soon, alot of the developers, including Civato, have said they are going to stop development for the HC bootloader. It does significantly improve performance and eliminates most of the glitches on ICS.
And it will make life easier in the future - upgrading the bootloader, etc. straight from CWM among others.
strongergravity said:
And it will make life easier in the future - upgrading the bootloader, etc. straight from CWM among others.
Click to expand...
Click to collapse
cruise350 said:
It will be soon, alot of the developers, including Civato, have said they are going to stop development for the HC bootloader. It does significantly improve performance and eliminates most of the glitches on ICS.
Click to expand...
Click to collapse
Alright sweet +thanks ;-) I'll update it later then
gears177 said:
Alright sweet +thanks ;-) I'll update it later then
Click to expand...
Click to collapse
Just stick with whatever custom recovery that is provided with the package you
use...not all features in all recoveries are yet supported.
some are meant only for certain BL's for instance HC3.2 and TWRP
from v4 BL on you are able to flash a zip thru recovery and more fastboot commands are available.
You need to read the change logs for each version as things are being added with each new release.
One thing i am certain of and that is if you are having ANY weird issues, sod, wifi OFF, nvflash issues then what seems to settle everything down is a rollback to HC - I think alot of us myself included, never flashed the right thing at the right time when first upgrading to ICS (and at some future point ending up with a "freakenstein" not one thing or the other and not working all that well either) when you start running a "compatible system" i.e kernel, bootloader, recovery, rom all working as they should, then things look and work a whole heccuvalot better!!!
I will not support HC bootloader for the Overclocking kernel for ICS.
To much problems. So expect no OC support for my rom if you stay on HC bootloader.

Questions about overclocking the a500

Hello everyone!!
I would like to overclock my acer iconia a500 (stock ICS 4.0.3 from acer) so I might be able to gain a bit more of performance (especially on the latest gameloft games like spiderman, nova3 and asphalt 7) but I am kind of lost here so I would like to know where to start with this.....
Thanks in advance!!!!!
It's the kernel that allows you to overclock. You can't do that on the stock Acer ICS. So, you've got a project ahead of you...lol
Are you rooted? Need to root first.
Recovery? Need to get a custom recovery, stock won't cut it.
Once those two are done, you can proceed.
Bootloader? If you're on stock ICS, then you probably have the new ICS bootloader. However, you'll need to flash the UNLOCKED bootloader to go any further. Get the Acer Recovery app from the play store and that will tell you which bootloader you are running. If you're still on a Honeycomb bootloader, you're ok (for now anyway).
Next, you'll need a rom that supports a custom kernel. Head over to Civatos thread in the dev section. His rom support a kernel that you can overclock and has the option to flash honeycomb bootloader parts, if you need that. There are many others to choose from as well.
Again: gain root, flash a custom recovery, choose a bootloader, choose a rom with a custom kernel. Once that is done, you can use SetCPU to overclock.
Last tip...Study the threads in the dev section to make sure you know what you are doing before you begin.
neotaku2008 said:
Hello everyone!!
I would like to overclock my acer iconia a500 (stock ICS 4.0.3 from acer) so I might be able to gain a bit more of performance (especially on the latest gameloft games like spiderman, nova3 and asphalt 7) but I am kind of lost here so I would like to know where to start with this.....
Thanks in advance!!!!!
Click to expand...
Click to collapse
um my acer plays those games flawlessly without overclock?
Nice
Rippster said:
It's the kernel that allows you to overclock. You can't do that on the stock Acer ICS. So, you've got a project ahead of you...lol
Are you rooted? Need to root first.
Recovery? Need to get a custom recovery, stock won't cut it.
Once those two are done, you can proceed.
Bootloader? If you're on stock ICS, then you probably have the new ICS bootloader. However, you'll need to flash the UNLOCKED bootloader to go any further. Get the Acer Recovery app from the play store and that will tell you which bootloader you are running. If you're still on a Honeycomb bootloader, you're ok (for now anyway).
Next, you'll need a rom that supports a custom kernel. Head over to Civatos thread in the dev section. His rom support a kernel that you can overclock and has the option to flash honeycomb bootloader parts, if you need that. There are many others to choose from as well.
Again: gain root, flash a custom recovery, choose a bootloader, choose a rom with a custom kernel. Once that is done, you can use SetCPU to overclock.
Last tip...Study the threads in the dev section to make sure you know what you are doing before you begin.
Click to expand...
Click to collapse
Thanks you kindly. I was actually researching this option, too. Your advice doesn't assume that the reader already knows certain aspects of rooting that may already be considered common knowledge. This really laid it all out for me. I have a reliable map, if you will.

[Q] a little bothered by rom ics and all these options.

What I cant understand is why people are downloading the ics rom when the acer a500 auto updates to ics when you update your update service?
another question, I believe black thunder is an app that flashes roms and it gives you an sbk, and you put the "0" in front of the cpuid to do this
but what about clockwork rom manager? do I still need to do this or can I just backup with titaniam and run the zip off my sd card?
and im sorry but im painstaiking at this moment to find the roms for ics...I fould a list and FLEX-resurrection caught my attention although iv'e seen no screen shots or anything on it where might I find that,?
ROM's are way better than stock
zolteck said:
What I cant understand is why people are downloading the ics rom when the acer a500 auto updates to ics when you update your update service?
another question, I believe black thunder is an app that flashes roms and it gives you an sbk, and you put the "0" in front of the cpuid to do this
but what about clockwork rom manager? do I still need to do this or can I just backup with titaniam and run the zip off my sd card?
and im sorry but im painstaiking at this moment to find the roms for ics...I fould a list and FLEX-resurrection caught my attention although iv'e seen no screen shots or anything on it where might I find that,?
Click to expand...
Click to collapse
Hi Zolteck,
ROM flashing to ICS was begun even before we got official ICS. Separately, ROMs by their nature are to allow some of us to do more with our devices than is possible with Stock eg extend battery/Overclock/USB audio/USB 3G. Also sometimes we can add features from future Android releases. In essence ROM's are super customizable and allow the user to convert his device for his purposes.
One of the issues that came with stock ICS was that its bootloader was locked thus preventing us from flashing new ROM's. There are many ways to now to circumvent this Blackthunder app being on of those. Thus, if you are on stock ICS you need to load CWM after unlocking. I am partial to this tool http://forum.xda-developers.com/showthread.php?t=1675939. After unlocking you can run the zip file from your SD card and then reinstall your apps using Titanium Back up.
There are lot of ICS ROMs in the development forum. I encourage you to also give a couple of Jelly Bean ROMs a rip.
Best of luck and happy flashing
thanks
gsurath said:
Hi Zolteck,
ROM flashing to ICS was begun even before we got official ICS. Separately, ROMs by their nature are to allow some of us to do more with our devices than is possible with Stock eg extend battery/Overclock/USB audio/USB 3G. Also sometimes we can add features from future Android releases. In essence ROM's are super customizable and allow the user to convert his device for his purposes.
One of the issues that came with stock ICS was that its bootloader was locked thus preventing us from flashing new ROM's. There are many ways to now to circumvent this Blackthunder app being on of those. Thus, if you are on stock ICS you need to load CWM after unlocking. I am partial to this tool http://forum.xda-developers.com/showthread.php?t=1675939. After unlocking you can run the zip file from your SD card and then reinstall your apps using Titanium Back up.
There are lot of ICS ROMs in the development forum. I encourage you to also give a couple of Jelly Bean ROMs a rip.
Best of luck and happy flashing
Click to expand...
Click to collapse
thanks a lot!..I will give it a try today see how it all goes
cpuid
[when I edit and put the '0' in front of my cpuid it says ok and creates a back up but when I go to look at it again the '0' is not there..any ideas?
hmm
gsurath said:
Hi Zolteck,
ROM flashing to ICS was begun even before we got official ICS. Separately, ROMs by their nature are to allow some of us to do more with our devices than is possible with Stock eg extend battery/Overclock/USB audio/USB 3G. Also sometimes we can add features from future Android releases. In essence ROM's are super customizable and allow the user to convert his device for his purposes.
One of the issues that came with stock ICS was that its bootloader was locked thus preventing us from flashing new ROM's. There are many ways to now to circumvent this Blackthunder app being on of those. Thus, if you are on stock ICS you need to load CWM after unlocking. I am partial to this tool http://forum.xda-developers.com/showthread.php?t=1675939. After unlocking you can run the zip file from your SD card and then reinstall your apps using Titanium Back up.
There are lot of ICS ROMs in the development forum. I encourage you to also give a couple of Jelly Bean ROMs a rip.
Best of luck and happy flashing
Click to expand...
Click to collapse
when I tried to install afterota on pc it said my uac must be disabled..any idea?
zolteck said:
when I tried to install afterota on pc it said my uac must be disabled..any idea?
Click to expand...
Click to collapse
Just Google how to disable windows uac
oh
shaun298 said:
Just Google how to disable windows uac
Click to expand...
Click to collapse
ahh thank you
OAT decryption
I cant seem to find my version or where to dl the oat from acer my version is stock ics acer_AV041_A500_RV05RC01_PA_CUS1
OTA tool
Here is the link for the full tool. Remember to save all the numbers associated with your tablet before you use this tool.
https://hotfile.com/dl/160313682/62f94d6/Afterota_v1_09.zip.html
This tool has a lot of features and will let you choose the bootloader to install and also install CWM. It will also help you to revert back in case of issues using simple update.zip files.
Follow the instructions carefully and happy flashing
btw, Why are you looking for your OTA version?

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