ASCER A500, bootload v9, TWRP 2.6.3 unable to boot primary ROM - Acer Iconia A500

I have an Acer A500, it has the v9 bootloader installed. I also have TWRP 2.6.3 installed as the secondary ROM, the recovery is also completely broken, fastboot and zip will not install on it (TWRP 2.6 is to big), but recovery using 2.4.4.0 does boot. That fine since with secondary and recovery installed I can use TWRP from either, which works great, but if I install a ROM it only boots once, then poof, its as if there is no kernel it will not boot. To boot a new ROM I have to format everything except the external SD (which I have removed) then install the ROM reboot to TWRP install it again, then reboot at which time it will boot about 1 is 3 times, if it fails try again and repeat.
Now the ACER is basically useless now as I can not boot safely to anything other than TWRP, I've tried 2 4.0.3 ROMs but I can not get the Installers to run, I've tried 2 10.1 ROMS boot both booted only once and also a 4.3 ROM (build 5 and 6) boot again both booted only once. I'm out of ideas I'd flash almost anything at this point to reset, but then there is that Windows 8.1 issue in which I can not get ACER driver to work (Duh!), and I do not think the issue is going to be fixed, I can only come up with 2 options 1 the internal storage is going bad, or the entire setup is just toast, since it can work, it just does not do so more than once.
Currently I have 10.2 (build6) running, so long as I do not need to reboot, so for now it is charging.
Any suggestions,
ERIC

egandt said:
Now the ACER is basically useless now as I can not boot safely to anything other than TWRP
ERIC
Click to expand...
Click to collapse
I have same problem with TWRP. Try to replace TWRP with TouchRecovery

Related

Multiple TF101 issues

Hi all,
Few problems with my TF101. I was running Cyanogen mod rom (not sure witch version, the boot screen was an alien in a vortex). Anyway i was getting some random reboots and the tablet started booting into CWM every time. I have tried several versions of CWM and other recoveries but none will install. In CWM i select the zip install-success, hard reboot and the pad again boots to CWM recovery v5.8.3.4. (also i cant access my external SD with this version of CWM)
While this is a nuisance the latest issue is than no custom will boot. They stick on the boot animation (i have waited up to 4 hours). The only rom that works is Revolver 4.2.1 but wifi does not work.
When i try to install stock roms in CWM it aborts with no error.
When I install the recovery installer APK it reboots to CWM v5.8.3.4 and does nothing
My ideal end state is a functioning CM rom and CWM that boots correctly.
Any ideas folks?
fixed my CWM issue with this http://forum.xda-developers.com/showpost.php?p=29632231&postcount=3
I then installed the recovery apk and wsa able to install CM V6

A500 recovery stuck "loading recovery kernel image"

Hi awesome XDA dudes
I've searched the forums, and even posted in the basic QA section to no avail. I may have just missed it somewhere, but here is the issue.
Tablet will work fine in Lightspeed 4.8 ROM. No issue there. But, when I try to get into the recovery (power and volume down) I get "booting recovery kernel image," forever.
I recently changed from the Clockwork to TWRP recovery and that is when the recovery function would no longer load.
How can I get back to Clockwork or smililar so that I can put a different ROM on my tab?
Thanks in advance!
Tom
Fixed this problem, only to find another.
So, since my tablet would still function normally (aside from recovery) I downloaded the Acer Recovery Installer App. And this did what everything else failed to do. It installed Clockwork Mod and I was actually able to get into the recovery. Whew!
So I went to install Flex shockwave ROM but the install froze at the Aroma 2.56 stage...forever. Tried again unsuccessfully and gave up. I did properly wipe and format beforehand. I then tried installing CM10 Rom, same exact problem.
So, I used Acer Recovery installer and loaded the TWRP recovery. Here is where things get interesting. I booted into recovery, wiped data and caches, and tried to install the aforementioned ROMs. Each time, Aroma installer worked fine and I was presented with all the install options, all the bells and whistles. After completing my selections, I was prompted to reboot.....
And each time the tablet hangs on the Acer spalsh screen.
So now my problem is reversed. I have access to recovery, but no ROM. :crying:
SOLVED !!
tfbielawski said:
So, since my tablet would still function normally (aside from recovery) I downloaded the Acer Recovery Installer App. And this did what everything else failed to do. It installed Clockwork Mod and I was actually able to get into the recovery. Whew!
So I went to install Flex shockwave ROM but the install froze at the Aroma 2.56 stage...forever. Tried again unsuccessfully and gave up. I did properly wipe and format beforehand. I then tried installing CM10 Rom, same exact problem.
So, I used Acer Recovery installer and loaded the TWRP recovery. Here is where things get interesting. I booted into recovery, wiped data and caches, and tried to install the aforementioned ROMs. Each time, Aroma installer worked fine and I was presented with all the install options, all the bells and whistles. After completing my selections, I was prompted to reboot.....
And each time the tablet hangs on the Acer spalsh screen.
So now my problem is reversed. I have access to recovery, but no ROM. :crying:
Click to expand...
Click to collapse
Ok, so I had a working ROM but my recovery was fried. So, using Acer Recovery Installer I was able to get a working recovery going.
Then the next problem was that I could not get CM10 to install. When I realized I needed to flash the bootloader (and yes fellow noobs this is different than the recovery) I was unsuccessful.
I tried the automated route using the Blackthund3r app, but the process would just hang at Entering bootloader.
I tried the manual NVFlash route provided by Dibbs and it would get past this point and then hang.
So Dibbs (thanks dude) helped me out via email and suggested I download babsector.rar
After I extracted the rar file, I saw the A501 A.bat file and flashed it. This provided me with hope as it flashed the tablet and the screen atcually read "PASS." But, I wasn't done yet as I still could not install CM10. So, back to APX mode and back into the babsector rar folder. I flashed the Tab with A501 B.bat and followed that immediately with flashing the v8.bat file. In the V8.bet file I chose the Thor 1.7.3 recovery (as suggested by Dibbs and others) and WOOHOOO.....PASS on the tablet again.
Feeling ever more confident, I booted into recovery and flashed the CM10 Rom....SUCCESS!!!!!!!!!!!!!!!
If you are having trouble....don't give up. Thanks again for the help to Dibbs and OKAstro!!

[Q] Boot hangs at Android sign.

Simply put, this is what happens when a rooting newbie discovers custom bootloaders and ROMs.
Current State:
A full stock ROM installed (no root) with the Skrillax V8 bootloader plopped on top of it. (which of course means the recovery-from-boot.p file still exists and that I don't have CWM.) The tablet will show the Acer logo then the Android logo and will give the appearance of booting. Then the icon flashes. It does this intermittently and forever.
What I want:
CM 10+ running with Skrillax and TWRP stably. I'd go with Flexreaper for next choice. Maybe I'll try to compile a KitKat version for it someday. Who knows.
How I managed to get my tablet in this crappy state:
Rooted tab a long while ago with a probably far outdated method.
Looked all over the internet later on how to unlock the bootloader and settled on the manual method in this excellent thread.
I flashed V8 and TWRP without a hitch using nvflash.
I wiped and installed Flexreaper.
I liked it but wanted a higher prize. I make a nandroid backup of it onto the external_sd and wiped and installed CM 10.1 from this thread.
This is where everything started going sour. It told me the install was invalid halfway. Disappointed, I wiped again and tried to restore my nandroid backup. It seemed to restore properly, but then Skrillax hung forever loading the kernel.
I wiped again and installed Flexreaper fresh. This time it booted. I downloaded the newest unofficial version of CM they mention on their wiki.
Booted to recovery and installed CM 10. It ran fine and I was impressed with the new OS. Then I noticed the apparent lack of Gapps.
I flashed the Gapps Jellybean package and rebooted. Skrillax hung.
Wiped everything I could fine in the TWRP menu and installed Flexreaper. Got past the primary kernel loading but the android icon would work for a bit then flash, starting all over again.
At this point I flashed several other recoveries, hoping it was my recovery. No such luck. I tried all of them included in V8.
Then finally, I downloaded full stock ICS and flashed it. I rebooted and noticed the same Android flashing thing.
Finally, I flashed V8 again, being the newbie I was, and then suddenly remembered while trying to boot to recovery that the Full install probably rewrote the recovery-from-boot.p.
And here I am.
Tl;dr version:
Went click-happy with ROMs, wiping, and recovery flashing until I was left with a stock OS that wouldn't boot with a Skrillax bootloader but no recovery.
The good news is, I still have cpuid+sbk, it still boots to APX (no idea how I didn't screw that up too.), and I have a nandroid backup on my external_sd which is probably untouched, since I was careful to not wipe it in TWRP.
Please help me fix this. I don't want an excuse to waste money on a flashy new Nexus or Asus Transformer tablet, I already have too many for my wallet's comfort.
I quess you renamed stock rom to update.zip and than flashed it? If you havent do it, put it on sd card and pres power+vol down (if nuttin happens than vol up). That shld trigger flashing proces
poslato sa elmag radija
uglyjohny said:
I quess you renamed stock rom to update.zip and than flashed it? If you havent do it, put it on sd card and pres power+vol down (if nuttin happens than vol up). That shld trigger flashing proces
poslato sa elmag radija
Click to expand...
Click to collapse
I don't have access to a micro sd card reader if the file must be placed on the micro SD card. I already have flashed the stock rom supposedly via TWRP, so I shouldn't have to flash it again, I wouldn't think. If I do, I guess I'll have to get a reader.
Yes. Micro sd. Rename it. You have guodes gere on xda. Im hoping it will help you.
poslato sa elmag radija
It didn't work. Still in same state as before.
I also have access to fastboot if that would help.
m27frogy said:
Simply put, this is what happens when a rooting newbie discovers custom bootloaders and ROMs.
Current State:
A full stock ROM installed (no root) with the Skrillax V8 bootloader plopped on top of it. (which of course means the recovery-from-boot.p file still exists and that I don't have CWM.) The tablet will show the Acer logo then the Android logo and will give the appearance of booting. Then the icon flashes. It does this intermittently and forever.
What I want:
CM 10+ running with Skrillax and TWRP stably. I'd go with Flexreaper for next choice. Maybe I'll try to compile a KitKat version for it someday. Who knows.
How I managed to get my tablet in this crappy state:
Rooted tab a long while ago with a probably far outdated method.
Looked all over the internet later on how to unlock the bootloader and settled on the manual method in this excellent thread.
I flashed V8 and TWRP without a hitch using nvflash.
I wiped and installed Flexreaper.
I liked it but wanted a higher prize. I make a nandroid backup of it onto the external_sd and wiped and installed CM 10.1 from this thread.
This is where everything started going sour. It told me the install was invalid halfway. Disappointed, I wiped again and tried to restore my nandroid backup. It seemed to restore properly, but then Skrillax hung forever loading the kernel.
I wiped again and installed Flexreaper fresh. This time it booted. I downloaded the newest unofficial version of CM they mention on their wiki.
Booted to recovery and installed CM 10. It ran fine and I was impressed with the new OS. Then I noticed the apparent lack of Gapps.
I flashed the Gapps Jellybean package and rebooted. Skrillax hung.
Wiped everything I could fine in the TWRP menu and installed Flexreaper. Got past the primary kernel loading but the android icon would work for a bit then flash, starting all over again.
At this point I flashed several other recoveries, hoping it was my recovery. No such luck. I tried all of them included in V8.
Then finally, I downloaded full stock ICS and flashed it. I rebooted and noticed the same Android flashing thing.
Finally, I flashed V8 again, being the newbie I was, and then suddenly remembered while trying to boot to recovery that the Full install probably rewrote the recovery-from-boot.p.
And here I am.
Tl;dr version:
Went click-happy with ROMs, wiping, and recovery flashing until I was left with a stock OS that wouldn't boot with a Skrillax bootloader but no recovery.
The good news is, I still have cpuid+sbk, it still boots to APX (no idea how I didn't screw that up too.), and I have a nandroid backup on my external_sd which is probably untouched, since I was careful to not wipe it in TWRP.
Please help me fix this. I don't want an excuse to waste money on a flashy new Nexus or Asus Transformer tablet, I already have too many for my wallet's comfort.
Click to expand...
Click to collapse
Babsector should still work - you would need t do a search for it
It seems to have worked properly, sort of. Flashing FLEXReaper results in an "Encryption failed." prompt at boot, which the button, of course, does not work. Wiping everything works except that the prompt notes "E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p4" Trying to reflash V8 with TWRP with the V8.bat file fails at format. More help?
My tablet is still displaying "Encryption failed", the button still doesn't work, and I still love my a500. Help?
Anyone?
I guess I'm screwed, then.
In the end, I think my data partition failed. Formatting or wiping data fails and when installing FlexReaper, it reports /data size as -1. Unless anyone knows how to fix flash memory, I think I'm stuck.

Trying to install cyanogenmod to nexus 4, I cannot flash it through TWRP recovery

I am trying to flash my N4 with cyanogenmod following the official wiki.
I'm at the point where I've installed TWRP into recovery, I've wiped everything (I've even formatted them since I couldn't wipe all of it initially), and the only error I see is "unable to mount /usb-otg".
Then, I've "installed" the CN zip files for the 13 and 12 versions, none of them works in the sense that when I reboot the system, I'm always coming back to TWRP.
What's wrong? Any suggestion?
Thanks
I've the same problems with my nexus 4
gerardgerard said:
I am trying to flash my N4 with cyanogenmod following the official wiki.
I'm at the point where I've installed TWRP into recovery, I've wiped everything (I've even formatted them since I couldn't wipe all of it initially), and the only error I see is "unable to mount /usb-otg".
Then, I've "installed" the CN zip files for the 13 and 12 versions, none of them works in the sense that when I reboot the system, I'm always coming back to TWRP.
What's wrong? Any suggestion?
Thanks
Click to expand...
Click to collapse
Hi gerardgerard,
I also wanted to flash my Nexus 4 with Cyanogenmod 12.1. So I installed TWRP into recovery and wiped everything, like it's explained in the wiki. I can also see the error "unable to mount /usb-otg". When I want to reboot the system I always get back to TWRP. Cyanogenmod doesn't boot correctly. Did you find a solution for the problem?
same problem
Hi
I'm having the same problem. As follows:
Cause (my mistake): I have been using Cyanogen-mod nightlies for a couple of months on my Nexus 4, and made the grave mistake of leaving the phone to upgrade one night but without it being plugged in properly - and it ran out of power part way through! (At least, that's what I think happened).
Fortunately, it would boot into bootloader and I could use adb/fastboot. I (re)installed TWRP 2.8.7.0 (from my Mac, using fastboot). And that works fine - I can boot into twrp ok.
Next I loaded the latest nightly from cm (using fastboot - is this what people call sideloading?) and used twrp to install it. It goes through the installation fine (the only error message is that it can't mount /usb-otg). But when I reboot it just goes back to twrp.
I then tried installing the earlier cm nightly that I know worked, but with the same result.
Finally, before I first installed cm I did a backup (using twrp), and I have tried recovering that. It seems to do all the right things, but again when I reboot it just goes back to twrp.
Any suggestions would be welcome.
Thanks
J
Flash back to a completely stock ROM and run through the set up to make sure everything works. Then copy CM to the phone, reboot to fastboot, flash twrp, immediately boot into recovery using the volume and power button without leaving fastboot, wipe data, cache, system, flash CM, reboot.
If the phone will not boot after flashing a stock ROM, boot to fastboot, flash the userdata.img file, and immediately go to stock recovery without leaving fastboot, wipe data/cache, reboot.
It works now!
I managed to fix the problem ... I found this guide for the Nexus 5:
http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701
and I applied those instructions. It didn't work first time, so I just repeated them and now it's working. I used the 5.1.1 stock downloaded from https://developers.google.com/android/nexus/images#occam.
I guess this is what audit13 means in their post - so thanks are due there.
I will next reinstall twrp and cm and I don't expect any problems with that (having done it successfully before).
Smaje

Can't get custom ROM installed

I'm having a very difficult time getting this phone setup. I can get very, very close... but then it starts boot looping into recovery.
So starting at the beginning, here is what I did:
- Booted up phone, make sure it works and connects to wifi (I find out later that it got encrypted, even though I didn't set a PIN).
- Inside the OS on first boot, I install and use the official bootloader unlock APK from Asus.
- Rebooted into the bootloader and fastboot flashed TWRP.
- Rebooted into TWRP and flashed the Oreo modem, current unofficial Carbon OS 6.1, nano gapps, and magisk 16.6.
- Rebooted and the Carbon ROM logo comes up. It works for about 2-3 minutes, then reboots.
- After many attempts to decrypt (and a lot of help from the forum), I successfully restore the phone to "WW_ZE552KL_14.2020.1712.85_M3.10.47.15_Phone-user.raw.zip" with the Asus tool.
- Phone is fixed and booting again to the OS, but I'm back to square one.
Second attempt:
- Thinking I need to flash the raw Oreo ROM (instead of just the Oreo modem), I use the Asus tool to flash "WW_ZE552KL_15.0410.1803.55_M3.10.47.19_Phone-user.raw.zip"
- The phone works fine and is now an Oreo ROM with an Oreo modem
- It's still unlocked, so I rebooted into the bootloader and fastboot flashed TWRP.
- Rebooted into TWRP and flashed the current unofficial Carbon OS 6.1, nano gapps, and magisk 16.6.
- Rebooted and the Carbon ROM logo comes up. It works for about 2-3 minutes, then reboots.
- After the reboot, it goes to TWRP... whether I just let it boot on its own, or press power when it says: Start - Continue to boot >
What am I doing wrong?
You're having a rough go at this one eh.
I know we talked about this before, but did you try a factory reset and wiping cache/dalvik before rebooting?
Yes. As we discussed before, you can't wipe cache from TWRP. So I'd wipe dalvik from TWRP, then reboot to the bootloader to do a "fastboot format cache".
I'm going to try a different ROM later this afternoon. Maybe that will make a difference.
Flapjack said:
I'm going to try a different ROM later this afternoon. Maybe that will make a difference.
Click to expand...
Click to collapse
Hello! I've been able to boot any ROM by:
1. flashing TWRP
2. rebooting to recovery
3. installing the ROM zip
4. rebooting to bootloader
5. fastboot continue
But when I restart the phone, it always boots to recovery(TWRP), so I have to repeat steps 4 and 5 to boot the ROM, which is
Could you try and tell me if it works for you too?
I'm gonna take a moment to read about the boot process in depth, as it seems there is no straightforward solution to this out there.
junglesnake said:
Hello! I've been able to boot any ROM by:
1. flashing TWRP
2. rebooting to recovery
3. installing the ROM zip
4. rebooting to bootloader
5. fastboot continue
But when I restart the phone, it always boots to recovery(TWRP), so I have to repeat steps 4 and 5 to boot the ROM, which is
Could you try and tell me if it works for you too?
I'm gonna take a moment to read about the boot process in depth, as it seems there is no straightforward solution to this out there.
Click to expand...
Click to collapse
1) Flash Oreo RAW (can be downloaded from @Saktis_STi' s unlocking thread.
2) Boot till system
3) Flash TWRP
4) Flash ROM, Magisk, GApps
5) Reboot
The reason why it reboots to TWRP is because of 'encryption' thingy.
BootloaderBoi said:
1) Flash Oreo RAW (can be downloaded from @Saktis_STi' s unlocking thread.
2) Boot till system
3) Flash TWRP
4) Flash ROM, Magisk, GApps
5) Reboot
The reason why it reboots to TWRP is because of 'encryption' thingy.
Click to expand...
Click to collapse
many many thanks! I was able to get Ressurection Remix working by now
your steps were right, and I will detail them better to tell how I made it work for others reading this thread:
1) Flash Oreo RAW
1.1 - @Saktis_STi's thread is a bit outdated. I downloaded the newest firmware from Asus website.
1.2 - I also had to find a recent recovery.img, which I think I got it from here https://forum.xda-developers.com/zenfone-3/how-to/original-recovery-img-boot-img-zenfone-t3572188
1.3 - I used the stock recovery's adb sideload to flash the stock ROM
2) Flash TWRP - all good here
3) Flash ROM, Magisk, GApps
3.1 - I wiped system, data, cache and dalvik.
3.2 - I flashed RR ROM, GApps and Magisk (EDIT 2: install all three before the first custom ROM boot, or GApps won't work)
3.3 - Performed a Factory Reset
4) REBOOTED TO GLORY!
For what it seems, the stock ROM encryption that is performed on the stock's first boot was the enemy.
Now one last thing... In Security -> Encription, my device is NOT encrypted.
Do I run the risk of ruining everything if I encrypt it?
EDIT: No, it didn't break, working fine
junglesnake said:
1) Flash Oreo RAW
1.1 - @Saktis_STi's thread is a bit outdated. I downloaded the newest firmware from Asus website
Click to expand...
Click to collapse
lmao. His RAW firmware version is the latest version though
https://forum.xda-developers.com/zenfone-3/development/updated-unlock-relock-bootloader-t3749456
Anyways, enjoy your phone running on custom ROM :good:

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