I haven't frequented the forum in a long time but recently flashed JMX2 with the new 4.3 bootloader. From my understanding, there is no way of reverting the bootloader back to 4.1.2 or whatever it was before. My question is, would it screw up my phone if I didn't first flash back to a stock 4.1.2 firmware through odin before attempting to flash my back up nandroid? Is it necessary to flash a stock firmware to roll back to a previous version?
Related
I'm currently running beanstalk 4.4.1 rooted with twrp installed. I did the 4.3 OTA update before I went with the custom roms.
what is my options as far as going back to stock 4.3? I've read several threads but non of them were the exact scenario that im in. Any help is appreciated.
Are you running an AT&T phone? If you are, you cannot flash any rom that tries to flash a bootloader that is older than 4.3. If you do, it will brick the phone.
audit13 said:
Are you running an AT&T phone? If you are, you cannot flash any rom that tries to flash a bootloader that is older than 4.3. If you do, it will brick the phone.
Click to expand...
Click to collapse
yes it is at&t. Also I do have my original backup but twrp doesn't recognize it
Why not load a 4.3-based ROM? If you want to go back to stock, you could try using mobile Odin to load a stock ROM.
I need to flash back to 4.3 stock firmware. right now i have a rooted 4.3 image that i flashed via odin. is there a stock 4.3 odin image out there? If not what is the best way to get back to stock? I appreciate all the help. the phone was previously updated to 4.3 via ota.
jra89027 said:
I need to flash back to 4.3 stock firmware. right now i have a rooted 4.3 image that i flashed via odin. is there a stock 4.3 odin image out there? If not what is the best way to get back to stock? I appreciate all the help. the phone was previously updated to 4.3 via ota.
Click to expand...
Click to collapse
You could try the image in Page 4 of the thread below for the Odin flashable *.tar file to get back to stock 4.3 ...
http://forum.xda-developers.com/showthread.php?t=2722660&page=4
I have, however, always found it is tidier to use (custom) recovery and the instructions in the thread below ...
http://forum.xda-developers.com/showthread.php?t=2658486
I am presuming, of course, that we are both talking about the AT&T i747 here.
Okay, so my phone is currently running 4.4.2 Cyanogenmod right now, I had to find out the hard way that I cant jump back to 4.3 due to the bootloader but will it be possible to install the stock 4.4.2 safely once its released? Or is there a way to go back down to 4.3 that I'm missing..
Shiro_Yuki said:
Okay, so my phone is currently running 4.4.2 Cyanogenmod right now, I had to find out the hard way that I cant jump back to 4.3 due to the bootloader but will it be possible to install the stock 4.4.2 safely once its released? Or is there a way to go back down to 4.3 that I'm missing..
Click to expand...
Click to collapse
Don't know how you got the impression you can't go back to 4.3 from Kit-Kat based CM. CM, like most stock ROMs, doesn't come with its own bootloaders but relies on manufacturer's bootloader to run. If you went to CM from stock 4.3, chances are your bootloader was unaffected and still remains at 4.3. You can check what bootloader your phone is on by going to settings and seeing what you have under baseband. If it's UCUEMJB then you have the 4.3 (MJB) bootloader and you should be able to use custom recovery to flash a stock 4.3 restore image.
If history is anything to go by, you would be unlikely to get the (newly released) 4.4.2 update OTA if you are not on a full stock (or stock-based) ROM. I would, however, not be in a rush for OTA as we can always trust the good guys in the development community to come up with a manual update process shortly. If you still want to revert to full stock 4.3, then you can follow the instructions in the thread below ...
http://forum.xda-developers.com/showthread.php?t=2658486
Your right!
Used the process you gave me and it worked, I had been trying to use odin but I supose a simpler solution was better. Thanks again!
I just switched from stable CM10.1 to stock 4.4.2 this week. It sucks. Performance and battery dropped drastically. Will be going back to CFW asap.
Recently brought my GS3 I747M back to life from a hard brick... and I flashed it to stock 4.0.4 rom via odin when doing so.Would I be able to upgrade it directly to stock 4.4.2 using odin? Or do I need to upgrade it to earlier version first, like 4.1 and 4.3? (phone is already rooted, so cant do it thru OTA). Thanks!
You can flash it with odin, but will need to factory reset too.
sure worked, thanks!
I am running stock right now (JB 4.2.2) and I am planning to flash a Lollipop ROM (AICP 10). If I create a backup (for my stock ROM) at TWRP and did the needed measures to flash the Lollipop ROM and was successful however I want to return to stock ROM. Do I just have to factory reset and restore my stock ROM backup to have a stock ROM again? Sorry for this noob question.
Heeeeelp!
Any idea if that would work?
Just use odin to flash any stock rom
So backup-ing in TWRP before I flash Lollipop from my current rom [Stock JB 4.2.2] is useless?
You can also use your backup from TWRP.
But It will then show that it has been modified, could be a problem with the warranty.
If you want to go back completely for warranty then odin is the way to go
Thank you! I actually don't care about warranty since mine is overdue already. All I wanted to know was if I will be able to go back to JB 4.2.2 with that backup in case I have problems with Lollipop.