T-Mobile Samsung Galaxy S6 SM-G920T, G920TUVU2COF8 Android 5.1.1 Lollipop stock firmware. The G920TUVU2COF8 is the official Android 5.1.1 update bringing battery life improvements, fixes on cocktailbar error when using a 3rd-party themes. There are also some bug fixes and improvements to the device performance included in the update package. This update was officially rolled out on August 5th, along with the Galaxy S6 edge (SM-G915T)
The G920TUVU2COF8 Android 5.1.1 stock firmware is for those folks who have had a rooted and modified T-Mobile Samsung Galaxy S6 SM-G920T. Whom who need the stock firmware if one wants to unroot, manually upgrade and to return back the device to its official firmware. A modified and a rooted device will not be able to get the 5.1.1 update anymore and it just says something like “The device has been modified in an unauthorized way” and or the update fails.
On a side note, the G920TUVU2COF8 Android 5.1.1 update cannot be rooted at this time being. So to those who have rushed in into rooting but now ended up into soft-bricks like just like stuck in Samsung logo which the phone can’t reboot normally and it hangs in the logo screen. You can easily fix it by means of installing back the official Android 5.1.1 G920TUVU2COF8 firmware.
Reminder: The G920TUVU2COF8 cannot be rooted with CF-AUTO ROOT and PINGPONG ROOT as of this moment! So refrain from rooting or else your device may only end-up into bootloop or just stuck in Samsung Logo. Once installed or been updated to Android 5.1.1, you cannot downgrade back to Android 5.0.2 G920TUVU1AOCG stock firmware.
Technical Details G920TUVU2COF8 update:
Device name: Galaxy S6
Model number: SM-G920T
Android version: 5.1.1
Baseband version: G920TUVU2COF8
Kernel Version: 3.10.61-5028597
Build Number: LMY47X.G920TUVU2COF8
Changelog details of the G920TUVU2COF8 5.1.1 update:
- Battery improvements
- Cocktailbar error fix to restore Cocktailbar service
- Various bug fixes and device improvements
How to Install the G920TUVU2COF8 5.1.1 stock firmware:
Disclaimer: Use of this guide is solely at your own risk!
– Make sure your phone is fully re-charge to avoid power interruption and flashing failure.
– Optional: Backup all important files stored from the phone’s internal memory such as contacts, photos, videos, MMS, SMS, emails, docs etc. Though, a most of stock firmware is non-wipe but in some circumstances if the flashing goes wrong it will delete all of your files.
– Optional: Perform factory reset to gain a smooth firmware flashing without failures especially if the device is rooted and running in an unofficial firmware.
– Used Windows-based computers, Odin will not run on Mac.
– Disable any running program in the system tray, to avoid the program conflicts and failures.
– Used the supplied USB data cable of your Galaxy S6, flashing failures is mostly caused by bad USB cable. So, make sure you have a perfectly working USB data cable.
Grab the necessary files for manual flashing.
– Install the USB driver for Samsung Galaxy S6 just download and install Kies as it includes the needed USB driver or grab it here.
– Download Odin Odin3_v3.10.6 here
– Download G920TUVU2COF8, Lollipop version Android 5.1.1 (Stock Firmware) – (link)
Again, this stock firmware is specifically for the Galaxy S6 with model number SM-G920T a T-Mobile retail version only. Do not play it around on any other Samsung Galaxy S6 variants or else you may wonder why when you brick your phone. I warned you.
1) Extract or unzip the downloaded firmware, Odin flasher program can’t read it until you’ll get the correct file path which is in a (.tar) file format.
2) Run Odin Downloader v3.10.6 flasher program.
3) Do Not check the Re-Partition checkbox. Mark check these check boxes Auto Reboot and F-Reset Time and nothing else.
4) Reboot the phone in download mode: To reboot the Galaxy S6 into download mode, you need to turn the power off. Once completely shut down, just press and hold the Volume Down key, Home button, and the Power button at the same time.
You should then 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 screen displays a box and says’s “Downloading.. Do not turn off target!!”
5) Connect the phone to PC when it’s only in the Download Mode screen. You should notice that the ID:COM box on ODIN will turn to blueish and will show you the port (COM) number.
6) Click on the AP button then browse to the folder where you extracted the stock firmware.
7) Hit the “START’ button if everything seems all good to start flashing.
8) Wait until you see the huge word “PASS!’ .
9) Disconnect the phone from the computer once it has completely reboots.
10) Optional: perform wipe data or factory reset to again.
Fixing possible failures on Odin:
If you ain’t see the word ‘PASS!’ and it says ‘completed 0/failed 1′, all you need is just repeat the procedure above.
If it still fails, check the following again,
– Try to use some other USB data cable.
– Try to use other computer USB port.
– Try to use other desktop/laptop computer.
For fixing bootloops and stuck in logo:
If you have bootloop, stuck at the welcome screen logo on the first reboot. Just perform a full data factory reset as this issues usually happens when your phone came from a modified system images, such as rooted kernels, custom recoveries, and unofficial firmware and you forgot to perform wipe data before restoring to stock.
– Wait a couple of minutes as the firmware installation still refreshing.
– If it continuous on an hour, perform a factory reset via recovery.
Just hold down Volume Up, Home, and Power button at the same time. Once the phone displays the recovery options scroll down using the Volume keys and then select Wipe Data/Factory reset. Re-flash the stock firmware if necessary.