Hi All,
I have an Xperia z5 E6633 which I have previously rooted and in doing so unlocked the bootloader.
I am trying to get it back to stock as much as possible and hopefully reinstate the Android Security Updates, does anyone have any experience in this?
So far I have flashed a stock firmware and locked the bootloader using Flashtool, Flashed a what I believe to be stock kernel but am still unable to get OTA Security updates.
I think I may have installed a kernel for E6683 as well as the device is listed as such on the Xperia Companion and on Flashtool and believe flashing the stock kernel will fix this, though I dont seem to be able to find a stock kernel for E6633 on the internet.
Does anyone have the stock firmware/kernal currently and could possible provide these for me to flash?
Many Thanks.
Related
Can it is possible? I have official firmware of jellybean dwnlded from sammobile.
Help.!
Not possible as the Knox-enabled bootloader prevents downgrades. Even if you were able to downgrade, say by perhaps not downgrading the bootloader while downgrading everything else, it's unlikely the radios on the device will ever function. About the only use there is for such a downgrade is to carrier unlock the S4 using RegionLock Away, and even then you only have to flash a modem to do that.
Downgrading to Android 4.4.2 should be possible, if you really want to. I'd recommend flashing a custom ROM instead. All the custom ROMs, regardless of whether they are Touchwiz-based, GPE-based or Cyanogenmod-based, all include the battery drain bugfix that stock ROMs lack.
Thanks but i dont want now bcz voltaqe kernel has solved my problem i.e sound gain
Excellent! Good to hear you got things resolved.
Hi,
i want to buy a new note 4 - the version 910f.
If i update the new phone with stock 4.4.4 rom to the latest 5.1.1 - will there be any problem if i want to install root or anything like this later on? Can i still install custom roms?
I want to now this, becqause if i update my new amazon fire 7 (2015) to latest stock 5.1.1 rom - there is no chance to start recovery anymore for installing custom rom. With only 5.0.1 all is good and i can install custom rom with recovery.
Is there a similar problem with note 4 or can i install latest stock rom and won´t get any problems later?
Only thing i found is that i can´t go back to 4.4.4 when installing 5.1.1? And i can´t go back to 5 when i´m installaing marshmallow because of changing partitions size?
So if i go to stock 5.1.1 it doesn´t matter, because i don´t want to use 4.4.4 and i can still use all stock roms and change to marshmallow later?
Bib_x said:
Hi,
i want to buy a new note 4 - the version 910f.
If i update the new phone with stock 4.4.4 rom to the latest 5.1.1 - will there be any problem if i want to install root or anything like this later on? Can i still install custom roms?
I want to now this, becqause if i update my new amazon fire 7 (2015) to latest stock 5.1.1 rom - there is no chance to start recovery anymore for installing custom rom. With only 5.0.1 all is good and i can install custom rom with recovery.
Is there a similar problem with note 4 or can i install latest stock rom and won´t get any problems later?
Click to expand...
Click to collapse
No problem if you don't plan to use 4.4.4. Note that if you update to latest 5.1.1
>your bootloader will be locked you can't go back to previous roms or use custom roms which are based on earlier versions such as 4.4.4 custom roms or 5.0.1 custom roms.
>you can still root your phone install custom recovery and install custom roms which have newer bootloaders. However rooting 5.1.1 is bit different because with android 5.1.1 there is an extra security layer in the kernel which detects and stops device from being rooted you need a "permissive kernel" to root 5.1.1. And then you can do whatever you like.
Would it be a better decision to stay on 5.0.1 for the moment and later install 5.1.1 custom rom? To not loose unlocked bootloader?
And one more question: if I deactivate bloatware in application setting off stock rom, is bloatware complete deactivated or is it still running in the background somehow?
Bib_x said:
Would it be a better decision to stay on 5.0.1 for the moment and later install 5.1.1 custom rom? To not loose unlocked bootloader?
And one more question: if I deactivate bloatware in application setting off stock rom, is bloatware complete deactivated or is it still running in the background somehow?
Click to expand...
Click to collapse
You can install 5.1.1 with these bootloaders coj3, coi3, pok1 , coh4 these are safe and won't lock your bootloader. i'd recommend 5.1.1 over 5.0.1 because the difference is day and night in long term use (when u have many apps) 5.1.1 is much smoother and better battery life just don't install coj5 or newer bootloaders. I don't use custom roms because in my experience stock rom is the best custom roms have some bugs etc. If you deactivate bloatware in application settings then its no more running in background.
OK, thank you. But so I should deactivate ota updates and flash latest stock update with Odin, so that I don't get latest locked bootloader?
How can i update to latest 5.1.1 update and keeping the (old) unlocked bootloader?
Do i have to donwload version from smamobile and flash with odin? How can i disallow to update bootloader too?
And if i update with ota - i will get latest (locked) bootlader automatically - no chance anymore to remove it?
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I don´t want to root my phone the first time (because of knox) but later on i maybe want to root too.
Bib_x said:
How can i update to latest 5.1.1 update and keeping the (old) unlocked bootloader?
Do i have to donwload version from smamobile and flash with odin? How can i disallow to update bootloader too?
And if i update with ota - i will get latest (locked) bootlader automatically - no chance anymore to remove it?
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I don´t want to root my phone the first time (because of knox) but later on i maybe want to root too.
Click to expand...
Click to collapse
There is no way to be sure if the older bootloader will work with latest 5.1.1 rom. So its better to stick with the bootloader which comes with the rom and yes if you update with OTA you will get latest 5.1.1 and bootloader automatically. Just go to sammobile and download 5.1.1 with COJ3, COi3, or POK1 (nordic countries). and Flash with odin.
Hii
I just got my Z2 rooted with this method
I just followed the steps
http://forum.xda-developers.com/xperia-z2/general/guide-how-to-root-xperia-z2-android-5-1-t3253878
Just one question
My bootloader sayz unlock not allowed...
Can I now flash TWRP or not?
Or is it just that I can not flash kernels??
I dont understand what is diffrent with bootloader locked and unlocked
Mine as I have read is locked forever so I dont want to brick my device or something...
Some advice about such bootloaders and what I can NOT DO would help me to understand
Thanks in advance
EDIT 01:
I just have followed the link in that post where I have rooted the phone
And just got TWRP installed as my recovery
So just to let you guys know evan dual recovery works fine with L5.1.1.
Just to say I have LockedBootloader
So guys please advice me for further
What restrictions do I have with the LB in diffrence to Unlocked BL
Can I do exact the same flashing of things like they on unlocked BL or not?
What should I be carefull about
Please guy give some info
1- With locked bootloader
you can only flash sony stock based roms (you can flash miui rom as there is a version with sony stock base).
you cannot flash cyanogenmod or custom kernels and any other rom.not based on stock sony.
2- with Unlocked bootloader
You can flash any custom rom or kernel for xperia z2 including cyanogenmod.
But you will LOOSE your DRM keys if you unlock your bootloader which will degrade the camera quality and xreality engine...
Pozdrav druže
You cant accidentally unlock your BL and if it says it cant be unlocked Im afraid it is locked forever. There is no any way to unlock it AFAIK. If you have root, which it looks like you do, you can install TWRP by downloading an app TWRP manager from the plat store, give it root permission and in Install section find your variant of Z2 and let it doo its thing. It will automatically flash recovery.img and reboot and thats it.
Now you can flash all [UB] as unlocked bootloader marked roms, but no custom kernels and AOSP ROMs.
In my experience, if you try to flash something for LB it will just produce an error and you can reboot your device normally without any changes.
Thanks guys !!!
No its all clear to me
working on D6503 5.1.1, tnx!
arnoudasmit said:
working on D6503 5.1.1, tnx!
Click to expand...
Click to collapse
Worked for me also but mine is also locked bootloader
It's work really good on my Xperia D6503 (23.4.A.1.264) with locked bootloader
last time i unlocked my phone and installed another rom, but i dont like that. so i thought to revert to stock rom.
then i flashed stock cm12.1 , then again boot loader was locked.
then i unlocked bootloader only, so as if in any case i need to recover my data by rooting.
today i read a post on yuplaygod forums that they will release an ota soon,
i want to ask is there any problem if i install the OTA, any chances of device bricking or something else, because bootloader is unlocked, but phone is not rooted , everything else is true stock.
I sent my phone to service center when it has 5.1.1 of cyanogen mod and I don't know how they flash 5.0.2 of cyanogen mod it doesn't install any ota updates so I rooted and manually installed 5.1.1 officially by YU but the problem remains same. Can anybody help me.
Sent from my YU Yureka using XDA Labs
I know with the Z3 i was able to flash an older firmware without unlocking the bootloader or doing any changes in order to be on a easily rootable version. Is it the same way with the X Compact?
There are some DirtyCow-tools to root phones, but I don't know if root is persistent or if it even works on the XCs ROMs. You can just download the earliest ROM you can find and try it youself. There are some ressources around, although not in this forum.
So yes, you should be able to downgrade and root, but so far nobody has posted any first person reports wether it works with the X Compact.
Thanks. I installed the firmware listed by Androplus in his advanced stock kernel 34.1.A.1.198 and worked from there. I guess in time there will be a way to root without unlocking bootloader but for now i'm happy. Now just waiting for a way to mirror the screen with the unlocked bootloader.