Saturday, August 25, 2012

Restore back T-Mobile Samsung Galaxy S3 SGH-T999 back to original ICS 4.0.4 T999UVALH2 stock firmware

If you want to install or revert back the original ICS 4.0.4 T999UVALH2 stock firmware of your T-Mobile Samsung Galaxy S3 SGH-T999 after installing any leaked android 4.1.1Jelly Bean here's the guide.

Maybe some of you has been complaining about some issues encountered after installing the leak version 4.1.1 Jellybean recently. Some  issues like bugs,lags and quite a few hiccups where it would vibrate, then freeze, is so normal for leaked version are just leaked version, meaning -  its not official released by Samsung, so expect undesired outcomes. Its a beta released or under lab test and used by advance users, just to get a sneak peak of what's new and how the next update may look like. Then,  if we found that this particular leaked ROM was unstable we just simply revert back to original Stock firmware that was officially provided by Samsung.

So, if you already decided to return back to the official T-Mobile Samsung Galaxy S3 SGH-T999 here's the step by step guide. And once and for all, to avoid any future issues, DO NOT install any leaked ROM if you're not truly understand of where and what it is used for.  Just stay on original stock firmware and then only upgrade to the official releases.

In addition, please don't blame to that person in forum exposing the leaked, because its been very useful for us (advance users) and mostly for devs to come up with a more awesome custom ROM.
Update: (Warning!) This procedure should not be used if your device already updated to official 4.3, the 4.3 update has a secured bootloader.  You cannot downgrade back to the old firmware for it might result into soft-bricks. This post was meant only for those who are running a leaked 4.1.1 firmware before. This post is way too old and has been posted before the official 4.1.1, 4.1.2 and 4.3 update came around. 

Heres how to install back  Official Android ICS 4.0.4 T999UVALH2 Ice Cream Sandwich on your SGH-T999 Galaxy S III T-Mobile.

This method is called manual flashing by using Odin downloader and the original stock firmware, for we can’t upgrade on kies or OTA anymore after installing unofficial firmware on our devices previously.

Disclaimer: We shall not be held responsible if anything happens to your device by following this guide. Proceed at your own risk.This procedure is for advance users only, typical users may only upgrade only thru Kies or via OTA and may not use this method.


- Back up all important files before proceeding. Although the Internal memory and microSD card are both left alone during after the flash process for this firmware is a non wipe version. But all your settings and configuration will all be reset. So, be sure to have a back up all of it for safety.
- If your device currently runs with any custom ROM, you may ask any assistance first from your ROM developer on how to safely return back to official stock to get rid of any issues.
- Fully recharge your phone’s battery.

Download Odin Flasher and USB driver
Odin downloader Odin3_v3.07 link
USB Driver Samsung SGH-T999 USB Driver

Grab the original stock ROM:

Odin Flasher Guide: T999UVALH2 Android 4.0.4 ICS Firmware on Samsung Galaxy S III SGH-T-999

1) “Extract” or “unzip” the downloaded stock ROM to get the .tar.md5 file.

2) Run Odin3_v3.07.exe

3) In Odin -  DO NOT CHECK the RE-PARTITION checkbox, only both ‘Auto Reboot’ and ‘F-Reset’ left checked.

4) Click on the PDA button then browse to the folder where you extracted the stock ROM
T999UVALH2_T999TMBALH2_T999UVLH2_HOME.tar.md5 file.

5. Reboot the phone in download mode: To reboot the Galaxy S3 into  download mode , you need to turn the power off.  After it completely shut off,  just  press and hold the Volume Down key,  Home button and the Power ON/OFF button simultaneously.
Samsung Galaxy S3 Download Mode buttons Volume Down,HOME,Power keys

You’ll then need to press the Volume Up to continue. You’ll be prompted into a warning screen and asking you  to press “volume up” if you want to continue or volume down to cancel, just simply press volume up to get into download mode. The download mode then displays an Android robot and say’s “Downloading.. Do not turn off target!!”

5) Once the phone in download mode screen, connect the PC USB cable To Phone. The highlighted ID:COM box is and indication that the device is connected properly to PC. If you still do not get any results, try another USB port on your computer.

6) Click the Start button to begin flashing.

7) Wait until it finishes or watch out for the word “PASS”.

Once the phone completely reboots, perform wipe/factory reset to get a fresher firmware installation.
1. Hold Power and Volume Up together, this will switch the device into recovery mode.
2. Release Power after holding it for a second but continue to hold the Volume Up button until recovery menu appears.

Select wipe cache
Select wipe data/factory reset.
Select reboot

That’s all! your Samsung Galaxy S III SGH-T999 now fully restored to the original Android 4.0.4 Ice Cream Sandwich.


  1. Txs a lot man... you save my life

  2. Can I use this one on Canada Wind Samsung Galaxy S III SGH-T999V ?

  3. No, I don't think so., it may work since both are the same but it might result to any undesired outcomes since each build has its own unique carrier specific default firmware settings. There must be an update from current version T999VVLALE6 soon.

  4. thanks sooo much!!! you save my life!!!!!!!!!! never install font changer!!

  5. You saved my ass. I flashed Hellfire Jellybean ROM and it worked like crap. I wanted to go back to stock and this worked. However, I had to flash it twice and make sure to clear my cache before it would boot.

  6. Thank you so much for this. I installed a rom for my phone and it would not and install. the back up I did wouldn't install at all. xda had a tar file I flash in odin to bring it back to stock. didn't work. This tar file had a longer name to it. But omg I was up for hours and hours trying to look for help. again thank brother.

  7. brother i got a phone and it has as recovery mode this that ok to do the procedure above?

  8. guy im getting a firmware error my phone wont come on, when i reach at system.img.ext4 it fails i need help asap

  9. Its only a PC to computer connection issues, happens oftentimes if you are new in flashing.. check everything. USB cable, PC port, close any running programs anti-virus, kies etc.

  10. Ended up bricking my phone and a nandroid wouldn't work.
    This was the final solution... And it worked!
    I love you so much right now! Thank you!

  11. i used this method but now i only get edge data. help please

  12. We can't help you until you can elaborate everything how exactly it happens, since this is just about restoring to official stock guide?

  13. But to gt-19300?

    I update my s3 gt-19300 to Jelly bean 4.1.1
    and is all rigth, but now I want to downgrade to
    the originally version
    4.0.4 (Ice Scream Sandwich)
    How Can I do that?

  14. You have GT-I9300, but you are asking this question on SGH-T999. Simply Google your previous build or send me your device country/provider info. Only then I can help you.

  15. I upgraded to 4.1.1 (Uvdli3) now I cannot go back to 4.0.4, I tried everything but it keeps freezing during the boot itself, I turn it on and only see a blinking led and the Samsung written in the middle of a black screen... Please guys, help me with it, I am very worried about having bricked my phone.. I appreciate your cooperation, rgds.

  16. Flash the original bootimage, follow this guide here:

  17. Kinda new to custom roms so this be a dumb question but.... if I reinstall the stock firmware on my galaxy III can I then receive the official ota updates from t-mobile??? ...currently running frosty jb and I like it but its just a little too buggy for me (blue flashes, vibrate/freezing/rebooting, battery consumption) so I want to know if I should revert back to stock or begin the shuffling of custom roms?

  18. hey man your are the best, thank you so much..

  19. Thank you very much DroidAngel. I screwed up my new replacement phone and forgot to update it to JB when I went to root it. Ended up bricking it so this guide saved me!

  20. I had tried to root but when I use root checker it says no root access. When I go into download mode it does show custom rom. Will your process still reset my phone back to original ics 4.0.4 and will it reset the flash counter?

  21. This process does not include resetting binary flash counter. Simply Google it, you problem will be resolve.

  22. When I'd got my Galaxy S3, it had Cyanogen mod, which really sucked((( beacuse of over 9000 bugs. But when I've restored original firmware ICS, my smartfone have got second life!!! It's now a device that really do its job!!! Thanks, man!!! Everyone, who has sgh-t999 t-moblie, don't worry, this operation will go smoothly!

  23. hi..... I carried out the steps up to wipe/factory reset ..and I have pressed the buttons volume and power,but I don't find this to be loaded until logo appears d to Samsung ... no i do a setting..please to help me

  24. You need to press VOLUME UP, HOME, and POWER all at the same time to get into recovery. Once it vibrates, release the POWER button.