Related
I have a a500 running an ICS rom. I want to revert back to stock and not have root access anymore. How can I go about doing this. If anyone can help please let me know.
GOOGLE STOCK UPDATE.ZIP ROM for acer iconia a500
ethere are two types of these around.. ONE WILL FLASH WITH CWM. The other must be flashed with the stock recovery.
cwm well your on custom rom so you know how to do this..
stock recovery. YOU CAN USE acer recovery installer to install the STOCK RECOVERY BACK onto your tablet. (read about boot -loader version you have )there could be a issue if you have the patched boot ics loader.
once you are back to stcok recovery put the stock update .zip on root of sd card( not in a folder) power off device .. Hold vol up button down. and power button it will boot into recovery and start flashing..
There are several threads explaining all of this in great detail. even some with d/load links to the rom files..
GOOGLE IS YOUR FRIEND. THE ABOVE IS REFERENCE ONLY AND THERE Could be easier ways.
GOOD LUCK.
marshall_634 said:
I have a a500 running an ICS rom. I want to revert back to stock and not have root access anymore. How can I go about doing this. If anyone can help please let me know.
Click to expand...
Click to collapse
I have timmydeans original zip, which will flash a full stock hc 3.2 Gen 1 rom/recovery
It comes with full instructions and an excellent guide from christos too
You do not need an sdcard for this method altho' u will need working ADB
If u want it let me know and I'll upload it somewhere for you
dibb_nz said:
I have timmydeans original zip, which will flash a full stock hc 3.2 Gen 1 rom/recovery
It comes with full instructions and an excellent guide from christos too
You do not need an sdcard for this method altho' u will need working ADB
If u want it let me know and I'll upload it somewhere for you
Click to expand...
Click to collapse
please upload it in 4shared
thank u
darvis said:
please upload it in 4shared
thank u
Click to expand...
Click to collapse
IF you are on the HC bootloader then you'll be ok on this
Just so you know:
THIS WILL WIPE ALL YOUR DATA, so backup any important files/photos etc...
You need your CPUID if you have a CWM backup then you'll find it in there
Use christos Guide as its a bit more detailed, you'll only need to follow along until step 24 - the rest of the steps entail getting root and installing CWM
Once the flash is done you will see in white letters PASS and underneath that a small red message "Secure boot: image LNX checksum fail!" this is not an error, just keep following the instructions.
If you're on the ICS Bootloader you are still able to use this, but the method is a lot different to the one above - let me know if you need the instructions
Acer Recovery Installer will tell you what version bootloader you have
---------- Post added at 12:20 PM ---------- Previous post was at 12:05 PM ----------
darvis said:
please upload it in 4shared
thank u
Click to expand...
Click to collapse
hi darvis, sorry, thought you were OP - you're not still trying to unbrick are you???
You can download the stock ROM from the developer’s thread here.http://forum.xda-developers.com/showthread.php?t=1422504
To flash the ROM, you can follow these simple steps given below:
Download the ROM from the link posted above and transfer it to your External SD card
Power off your device and boot into recovery mode (Hold Volume Down & Power button together, and release both when you see text at the top of the screen)
Perform a full backup of your existing ROM as a precautionary measure
Perform a full wipe (Wipe Data, Wipe Cache partition & Wipe Dalvik Cache in Advanced Options)
Install zip from SD card/Choose zip from SD card ( here, select the zip file you copied to your sd card in Step 1)
Once the installation is complete, reboot.
Thats it!! Your’e done, and should now be running Stock Honeycomb version 3.2.1 with root.
inoe_day said:
You can download the stock ROM from the developer’s thread here.http://forum.xda-developers.com/showthread.php?t=1422504
To flash the ROM, you can follow these simple steps given below:
Download the ROM from the link posted above and transfer it to your External SD card
Power off your device and boot into recovery mode (Hold Volume Down & Power button together, and release both when you see text at the top of the screen)
Perform a full backup of your existing ROM as a precautionary measure
Perform a full wipe (Wipe Data, Wipe Cache partition & Wipe Dalvik Cache in Advanced Options)
Install zip from SD card/Choose zip from SD card ( here, select the zip file you copied to your sd card in Step 1)
Once the installation is complete, reboot.
Thats it!! Your’e done, and should now be running Stock Honeycomb version 3.2.1 with root.
Click to expand...
Click to collapse
I used the ICS unrooted update.exe and have not way of findout what what build I was on....any clue on how to proceed to get back to my original Acer unrooted honeycomb?
How r u getting on dog? Oops sorry "dawg"
dibb_nz said:
IF you are on the HC bootloader then you'll be ok on this
Just so you know:
THIS WILL WIPE ALL YOUR DATA, so backup any important files/photos etc...
You need your CPUID if you have a CWM backup then you'll find it in there
Use christos Guide as its a bit more detailed, you'll only need to follow along until step 24 - the rest of the steps entail getting root and installing CWM
Once the flash is done you will see in white letters PASS and underneath that a small red message "Secure boot: image LNX checksum fail!" this is not an error, just keep following the instructions.
If you're on the ICS Bootloader you are still able to use this, but the method is a lot different to the one above - let me know if you need the instructions
Acer Recovery Installer will tell you what version bootloader you have
---------- Post added at 12:20 PM ---------- Previous post was at 12:05 PM ----------
hi darvis, sorry, thought you were OP - you're not still trying to unbrick are you???
Click to expand...
Click to collapse
Need instructions from ICS.
Thanks
tennessee_titan said:
Need instructions from ICS.
Thanks
Click to expand...
Click to collapse
you've been having some troubs titan - are u stuck in apxmode still or what?
if you're on the patched bl can u boot into fastboot (pwr/vol up)?
do u have another pc you can try this on?
try running a500 manager and see if it recognises that yr tab is in apx mode (pwr lite on and black screen) the boot/recovery drivers must load b4 you can get into bootloader download mode/a500 apx mode displayed on yr tab screen - check device manager.....usb controllers...if they are there then uninstall them, reboot tab and pc. Use a different usb port to connect yr cable and fingers crossed the drivers will install and you can carry on from there...what can happen sometimes with a failed nvflash/euu is the drivers get screwed up and MUST be reinstalled again before any flash will take place
One other thing...don't panic....i've struck this a couple of times where nothing seems to work, even my old faithfull timmydeans v4 sometimes fails to get me out of apx mode, but uninstalling all acer and google drivers, disconnect the cable and clean boot seems to work...in the end!!! oh another tip don't have your tab connected to the pc while booting up - clean boot all round, then connect yr cable and wait for the drivers to install.
once you're up n running again, full wipe and fully format EVERYTHING do it 3 times at least and even after youve flashed yr rom on there, fastboot is the easiest way to do this and also the most riskiest if you accidentally give it the wrong command so be meticulous here - if u brick it with fastboot - well, i don't know if theres any way back after that
the instructions i spoke of earlier are all in jazzyjames rollback thread
Hello,
asi the name of thread suggests, i have a little issue. I formatted my data, media and sd card. So i lost my *.zip files with ROM and kernels. Issue is, hence i dont have any ROM installed, and i cant mount USB via my recovery (arter97's Philz Recovery) so i cant copy another ROM into my phone in order to flash it.
Anyone have some ideas, please? Im sure that this can be solved somehow.
Thank you.
You can flash StockRom over Odin
Xh3maa said:
You can flash StockRom over Odin
Click to expand...
Click to collapse
When i plug my phone via USB into my laptop, phone automatically turn on and boot to recovery. Where can i find stock rom?
Make sure you go to Download Mode BEFORE you plugin your Phone. You must press vol- homebutton and poweron button at the same time an wait for downloadmode
Xh3maa said:
Make sure you go to Download Mode BEFORE you plugin your Phone. You must press vol- homebutton and poweron button at the same time an wait for downloadmode
Click to expand...
Click to collapse
Ill try it, thanks for suggestion.
Carach_CZ said:
Hello,
asi the name of thread suggests, i have a little issue. I formatted my data, media and sd card. So i lost my *.zip files with ROM and kernels. Issue is, hence i dont have any ROM installed, and i cant mount USB via my recovery (arter97's Philz Recovery) so i cant copy another ROM into my phone in order to flash it.
Anyone have some ideas, please? Im sure that this can be solved somehow.
Thank you.
Click to expand...
Click to collapse
Had same issue some time back.
I used TWRP. It has option to mount. ( Do it only if you have not converted the file system)
---------- Post added at 04:26 PM ---------- Previous post was at 04:22 PM ----------
If you cant install TWRP, complex way would be adb push. You need adb and with some commands files can can be pushed to phone.
It happened to me a lot, but yea let's start.
You might have noticed that the Tab 2 cables die quickly, even tho they should be "high quality".
They start only charging the device slowly as never, and the computer can't even recognize the tablet.
So what do you need to reflash the OS?
1. FlashFire from Chainfire (requires root, on Play Store)
2. Any file manager
[STOCK ROMS]
1. Download the rom you want and move it to your SD card using a file manager. I use FX File Manager, it's good luls
2. In FlashFire, add Wipe and select Cache and leave the other on options turned on.
3. Select the ROM. Voila, should work.
[CUSTOM ROMS]
1. Install the TWRP app
2. Make sure your tab is rooted
3. Install TWRP.
4. Get any rom. I used the 7.1.x one from unlegacy-android.
5. Flash it, clear dalvik, cache and data.
6. Voila, done!
Nice guide, I already did that before
Fajormein said:
It happened to me a lot, but yea let's start.
You might have noticed that the Tab 2 cables die quickly, even tho they should be "high quality".
They start only charging the device slowly as never, and the computer can't even recognize the tablet.
So what do you need to reflash the OS?
1. FlashFire from Chainfire (requires root, on Play Store)
2. Any file manager
[STOCK ROMS]
1. Download the rom you want and move it to your SD card using a file manager. I use FX File Manager, it's good luls
2. In FlashFire, add Wipe and select Cache and leave the other on options turned on.
3. Select the ROM. Voila, should work.
[CUSTOM ROMS]
1. Install the TWRP app
2. Make sure your tab is rooted
3. Install TWRP.
4. Get any rom. I used the 7.1.x one from unlegacy-android.
5. Flash it, clear dalvik, cache and data.
6. Voila, done!
Click to expand...
Click to collapse
on firmware option for stock rom flash did u tick modem firmware or u leave it as it is ?
What do you do if you find that the cable is broken when you wiped wverything(system too) in recovery and you go in download mode and the cable doesn't work???? :'(
lukigno95 said:
What do you do if you find that the cable is broken when you wiped wverything(system too) in recovery and you go in download mode and the cable doesn't work???? :'(
Click to expand...
Click to collapse
Since you still have the recovery just place a rom in a sdcard and install it with the recovery.
john99ap said:
Since you still have the recovery just place a rom in a sdcard and install it with the recovery.
Click to expand...
Click to collapse
In the cyanogenmod recovery there isn't the "install" button to flash a .zip file...
I have only " apply update" that looks only in /data/media path with no way to go into the sd card, and apply update from ADB but usb connection doesn't work
Please help me I need too unbrick this tablet :crying::crying:
I don't understand why USB connection doesn't work with pc and just work for charging... I tryed with every driver versions , computers and odin version but is invisible to computers....
The only problem now is that in stuck with stock recovery, stuck on bootlogo and without an USB.
The only way to fix now certainly is sending to repair.
If you guys help me to go back successfully to stock, I'll make a guide to explain the process, maybe for all 3 models. I just need help on this one
I have an A2017G
So this is my fourth time trying to get back to stock. the first one resulted on a DFU brick. The second one was through MiFlash and the system had random reboots. The third, I flashed tron1's A2017G B04 Bootstack and a DrakenFX flashable zip (for the U, just wanted to try) and TWRP said that there was no system which turned out to be true... i had wiped system, data and caches before, but it seemingly installed okay...
I also tried to use MiFlash again and get B10, but it started to throw an error out of the blue (the specified cast is not valid, or something along the lines). I used it at least 4 times before.
So what zip should I use? I never tried flashing one of those update zips (I have full official B10 on the sdcard) but I believe they won't work. Please tell me if they do work...
again, if i manage to get SAFELY to stock and AVOID DFU I'll make a nice guide so that we stop asking. Most custom roms are flawed, for ex. Lineage has bad compatibility, Pure Nexus (the one I'm using now) has extreme, Galaxy Y grade lag, and RR simply works worse than stock (it's probably the best one of the bunch though).
i am in in the process of going back to stock(A2017), will let you know.
---------- Post added at 04:07 AM ---------- Previous post was at 03:14 AM ----------
I have followed all the tutorials but its failed and now i cant even install any zip in twrp , cant mount internal storage.. deive or resource busy and cant restore my LOS based rom.. same errors..
satish.yarramsetti said:
i am in in the process of going back to stock(A2017), will let you know.
---------- Post added at 04:07 AM ---------- Previous post was at 03:14 AM ----------
I have followed all the tutorials but its failed and now i cant even install any zip in twrp , cant mount internal storage.. deive or resource busy and cant restore my LOS based rom.. same errors..
Click to expand...
Click to collapse
well you can get to EDL and flash a full A2017 EDL package. I can't, not on this computer
Does EDL work?
Choose an username... said:
well you can get to EDL and flash a full A2017 EDL package. I can't, not on this computer
Click to expand...
Click to collapse
TWRP doesnt mount /Data
---------- Post added at 04:19 AM ---------- Previous post was at 04:16 AM ----------
Choose an username... said:
well you can get to EDL and flash a full A2017 EDL package. I can't, not on this computer
Click to expand...
Click to collapse
I tried Format system option in Wipe Menu, and that caused this ' Cnat mount /Data ' issue.
satish.yarramsetti said:
TWRP doesnt mount /Data
---------- Post added at 04:19 AM ---------- Previous post was at 04:16 AM ----------
I tried Format system option in Wipe Menu, and that caused this ' Cnat mount /Data ' issue.
Click to expand...
Click to collapse
well I meant use MiFlash, but I don't know if you should even think about getting out of TWRP in this state. No idea
Hey how to boot EDL mode
Choose an username... said:
well I meant use MiFlash, but I don't know if you should even think about getting out of TWRP in this state. No idea
Click to expand...
Click to collapse
Please help, how to boot EDL mode? please help i forgot
satish.yarramsetti said:
Please help, how to boot EDL mode? please help i forgot
Click to expand...
Click to collapse
I don't think you should when having TWRP loaded on your RAM and your system probably not there...
My DFU brick was just because of that
but if you insist, turn your phone off and hold the two volume keys, then connect the USB cable (it has to be connected to the PC obviously)
Still had TWRP
Choose an username... said:
I don't think you should when having TWRP loaded on your RAM and your system probably not there...
My DFU brick was just because of that
but if you insist, turn your phone off and hold the two volume keys, then connect the USB cable (it has to be connected to the PC obviously)
Click to expand...
Click to collapse
Man, still i had twrp and i can access internal storage. let me see if i can restore my rom
---------- Post added at 04:37 AM ---------- Previous post was at 04:34 AM ----------
satish.yarramsetti said:
Man, still i had twrp and i can access internal storage. let me see if i can restore my rom
Click to expand...
Click to collapse
Thanks God! Restore is in progress and if it works i wont try to get back to stock until someone find a sure shot method for that... waiting.. waiting..
satish.yarramsetti said:
Man, still i had twrp and i can access internal storage. let me see if i can restore my rom
---------- Post added at 04:37 AM ---------- Previous post was at 04:34 AM ----------
Thanks God! Restore is in progress and if it works i wont try to get back to stock until someone find a sure shot method for that... waiting.. waiting..
Click to expand...
Click to collapse
MiFlash is that method. It only has to be in the mood to work...
restore failed
Choose an username... said:
MiFlash is that method. It only has to be in the mood to work...
Click to expand...
Click to collapse
restore failed "extracttarfork() process ended with error=255"
satish.yarramsetti said:
restore failed "extracttarfork() process ended with error=255"
Click to expand...
Click to collapse
i had that error when I was backing up. Try to wipe all the partitions but internal (not necessarily format, go to settings and tick use rm -rf) maybe it works. if not try formatting with ext4
lol deleted
No, doesnt help
Choose an username... said:
lol deleted
Click to expand...
Click to collapse
No its doesnt help wiping all partitions.. same error
Mount -> Unmount /data
Wipe -> Format Data (the actual button next to 'Advanced Wipe')-> type 'yes' -> Reboot Recovery
Wipe -> Advanced Wipe -> Tick 'Data' -> Change File System -> EXT4
Try to mount /data
This has worked for me going from an LOS system back to Stock.
satish.yarramsetti said:
No its doesnt help wiping all partitions.. same error
Click to expand...
Click to collapse
QuantumFluxx said:
Mount -> Unmount /data
Wipe -> Format Data (the actual button next to 'Advanced Wipe')-> type 'yes' -> Reboot Recovery
Wipe -> Advanced Wipe -> Tick 'Data' -> Change File System -> EXT4
Try to mount /data
This has worked for me going from an LOS system back to Stock.
Click to expand...
Click to collapse
It might have worked post restart. I am unable mount internal storage or fash but Post restrat it worked
QuantumFluxx said:
This has worked for me going from an LOS system back to Stock.
Click to expand...
Click to collapse
could you tell us how you did to get to stock? What's your device, A2017G? What did you flash?
That's pretty much everything I want to know
A2017U from LOS to stock using the files on https://forum.xda-developers.com/showpost.php?p=68873482
The only reason I mentioned it when I have the United States model is because I have ran into a problem on multiple devices going from CyanogenMod to any sort of AOSP-based ROM without clicking that format data button. The first time I ran into the problem comma I could not mount my data partition.
I advised @satish.yarramsetti about this here. @satish.yarramsetti, can you confirm that the ZIP I linked you to in the other thread is the one you flashed and is booting?
Choose an username... said:
could you tell us how you did to get to stock? What's your device, A2017G? What did you flash?
That's pretty much everything I want to know
Click to expand...
Click to collapse
QuantumFluxx said:
A2017U from LOS to stock using the files on https://forum.xda-developers.com/showpost.php?p=68873482
The only reason I mentioned it when I have the United States model is because I have ran into a problem on multiple devices going from CyanogenMod to any sort of AOSP-based ROM without clicking that format data button. The first time I ran into the problem comma I could not mount my data partition.
I advised @satish.yarramsetti about this here. @satish.yarramsetti, can you confirm that the ZIP I linked you to in the other thread is the one you flashed and is booting?
Click to expand...
Click to collapse
I am Nuclear Rom(LOS Based) and tried to go back to stock. I have followed all tutorials but when i try to reboot, TWRP warned me that there is no OS. So i didn't reboot as it might remove TWRP ( it might have booted but not sure) ( i also flashed NO verify zip) , so i thought of formatting in wipe menu which caused a lot of problems like cant mount data & device busy errors . I tried to flash N boot loader and mod but every FLASH is getting failed. So i decided to restart and luckily i have TWRP and no os and my nandroid back up niether worked.
Finally i flashed Clean LOS.
Understood. I have received that same warning in the past after flashing stock. At any rate, if there's no OS installed, there's nothing to overwrite TWRP. The phone would just sit at the ZTE logo and you would have to hold Vol Up+Power to get back into TWRP. If you decided to try again, at least you know you can restore LOS if it doesn't work... Good luck.
satish.yarramsetti said:
I am Nuclear Rom(LOS Based) and tried to go back to stock. I have followed all tutorials but when i try to reboot, TWRP warned me that there is no OS. So i didn't reboot as it might remove TWRP ( it might have booted but not sure) ( i also flashed NO verify zip) , so i thought of formatting in wipe menu which caused a lot of problems like cant mount data & device busy errors . I tried to flash N boot loader and mod but every FLASH is getting failed. So i decided to restart and luckily i have TWRP and no os and my nandroid back up niether worked.
Finally i flashed Clean LOS.
Click to expand...
Click to collapse
QuantumFluxx said:
Understood. I have received that same warning in the past after flashing stock. At any rate, if there's no OS installed, there's nothing to overwrite TWRP. The phone would just sit at the ZTE logo and you would have to hold Vol Up+Power to get back into TWRP. If you decided to try again, at least you know you can restore LOS if it doesn't work... Good luck.
Click to expand...
Click to collapse
The restore is also not working i got some error 255 ... Strange thing is i got a warning like no OS after installing LOS but i booted.
I tried formatting Data I tried formatting internal storage, didn't work. I tried putting the password "default_password" it worked but then the phone said my phone is broken and if to format it. If I say yes it boots to twrp and shows an error message and auto restarts quickly after. And goes to the same password screen. I tried only flashing the ROM and twrp and that also didn't work. I tried flashing stock via the mi tool and then the custom ROM, that didn't work either and ofc only flashing stock works. Can somebody help me? How can I fix this??
SOLVE: wipe data, and if that didn't work (which it didn't this time for me) flash stock and then use a pass code, boot into twrp and you'll probably need to enter the pass code, press on back then wipe then advanced wipe and then wipe data and storage. Reboot recovery, if you don't see the pass code any more that's good, that means you removed the encryption. Liquid remix requires the device to not be encrypted to flash the rom without problems and maybe your rom does too.
I had this issue, the only way (at least for me) is you need to wipe internal storage in twrp as well.
Boot into twrp, there should be an option to format data(it is not the same as wipe data) and after selecting it you need to type yes and then reboot.
WhatzIt2Ya said:
I had this issue, the only way (at least for me) is you need to wipe internal storage in twrp as well.
Click to expand...
Click to collapse
Already did that, didn't work
Will people ever start reading the OP of each thread?
Find out on the next episode of the XDA Developers forum!
michkost858 said:
Will people ever start reading the OP of each thread?
Find out on the next episode of the XDA Developers forum!
Click to expand...
Click to collapse
Yeah, when the NOTES say "And most importantly DONT READ THE OP" ?
---------- Post added at 02:10 PM ---------- Previous post was at 02:10 PM ----------
YayJohn said:
Already did that, didn't work
Click to expand...
Click to collapse
And format data? Not in advanced wipe, it's besides it.
WhatzIt2Ya said:
Yeah, when the NOTES say "And most importantly DONT READ THE OP"
---------- Post added at 02:10 PM ---------- Previous post was at 02:10 PM ----------
And format data? Not in advanced wipe, it's besides it.
Click to expand...
Click to collapse
When he said "Will people ever start reading the OP of each thread?" I think he was talking about you XD because you told me to format internal storage and that was one of the first things I said I done in the post and I fixed the issue before the guy told me to format data in a different way
Here is what i wrote as a step by step :
21vm said:
Hi guys,
...
As i've compiled durong days and weeks all the necessary information before doing anything, i share here for everyone who not sure how to proceed the steps i've followed and the links to the resources.
Feel free to correct, complete or delete wrong steps or make it easier to understand, the goal is to help people as we liked someone do/did it for us.
-- if this can help, use this in other threads, copy it, share it : it's useless if we don't use it --
0. Remove screen locks before flashing (pin, fingerprint...)
1. Download the ROM and Gapps (Gapps package is : arm64 / 9.0 / nano), TWRP installer and Magisk
2. Move your ROM.zip + GApps + TWRP-Installer.zip + magisk to your EXTERNAL storage
3. Enable developer option in ur device and enable oem unlocking in developer option.
4. Make sure drivers are installed correctly on your pc and adb install
5. Save the cosmic dan TWRP fastboot_boot_only.zip in the adb folder (check twice to download the right twrp !!!)
5. Turn off ur phone.
6. Now press and hold voume down+power button to start on download mode
7. connect the phone to the pc/laptop
8. Open command prompt on your pc/laptop and run the following command: fastboot oem unlock
9. Your phone will be unlocked.
10. if your phone reboot, restart it on download mode as previously and enter adb again
11. in order to reboot on twrp, run the following command : fastboot boot boot-recovery.img (the file must be on adb's folder)
12. in twrp -> Wipe->Format data : type YES. Then, go to wipe -> advanced wipe and wipe cache, data and system
13. return to Reboot menu in twrp and change partitions, wipe as previously
14. Flash the ROM zip and the TWRP-Installer.zip
15. Reboot to Recovery via TWRP (Reboot -> Recovery), Flash GApps and Magisk
16. Reboot to System
17. Enjoy !
Click to expand...
Click to collapse
21vm said:
Here is what i wrote as a step by step :
Click to expand...
Click to collapse
if people have this problem they probably are not on stock so that means no need for all that unlocking bootloader process, It's very simple, just format data and storage if that doesnt work do what I did and I know formatting data and storage works because it worked for me once
YayJohn said:
if people have this problem they probably are not on stock so that means no need for all that unlocking bootloader process, It's very simple, just format data and storage if that doesnt work do what I did and I know formatting data and storage works because it worked for me once
Click to expand...
Click to collapse
I think more is better : it's not that hard for people to read my post and start in the point they want, in that case, point 12. But you're right, you said exactly the same as me but your comment i better...