T-Mobile has launched the official Android 5.1.1 Lollipop OTA Update for all the Galaxy Note 4 users. You can check the instructions listed in this post if you want to learn how to successfully install this new update manually without waiting for it to arrive over-the-air.

Android 5.1.1 Update comes with several major improvements and tweaks over the Android 5.0.1 OS, which means that you should be getting a much better performance of your Galaxy Note 4 T-Mobile device. You can read more about this release here.

Before starting the update you should check the guidelines below:

  • use the tutorial only with the Samsung Galaxy Note 4 T-Mobile devices.
    - the model number of your phone has to be SM - N910T.
    - check the model number of your phone under Settings> About Phone menu.
  • do not try to update any other different devices with the files that you will find in this post.
  • download and install the Samsung USB Drivers on your computer from here.
    - these USB drivers will allow your computer to detect the device, in order to allow Odin app to send new firmware files to your phone.
  • Odin3 v3.10.6 is the app that you will use in order to flash the new update manually.
    - Odin needs to run on a computer with the antivirus app disabled.
    - also, the Samsung KIES needs to be disabled, too, if you've installed it on your computer.
    - these apps are going to try and block the Odin app from sending any files to your phone.
  • you also have to enable USB Debugging option from the Developer Options menu.
    - Developer Options might not be listed under Settings menu, but you can enable it too.
    - go to Settings> About Phone and tap 7 times on the Build Number section.
    - return to Settings, scroll down to the newly created Developer Options menu and open it.
    - find USB Debugging and enable it, too.
  • this update will revoke any root access in case your device has been previously rooted.
    - also, any custom Recovery will be replaced with a stock Recovery image.
  • you can install the update over a custom ROM, too.
    - installing the Samsung Android 5.1.1 firmware update over a custom ROM will require you to apply an extra 'factory reset' process.
    - the 'factory reset' process wipes clean the system memory partition, but it won't delete any data from internal storage.
    - factory resetting the device will remove the custom ROM and allow the new official ROM to boot in normal mode.
    - these steps are listed at the end of this post.
  • if your phone is running a 100% stock Android firmware, then the updating process shouldn't remove any data from your device.
  • before starting the update you should check the phone's battery charge level, as it should be over 50% and prevent the device from powering off during the installation process.
  • this tutorial is destined to be used by advanced users, we cannot be blamed if you brick the device nor in case you lose any data in the process.
  • read the whole tutorial before starting the update.

Now that you know all of the above you can continue to the next part of this post.

How to flash Android 5.1.1 N910TUVU2DOK2 Lollipop Update for T-Mobile Galaxy Note 4:

  1. Download the N910TUVU2DOK2 firmware archive file from here.
  2. After the download is done you can  extract the contents in the archive.
    - you should get the N910TUVU2DOK2 tar.md5 file.
    - do not extract any further than that.
  3. Download Odin3 v3.10.6 from here.
    - extract the Odin contents on your PC.
  4. Power off your phone.
  5. Launch the Odin3 v3.10.6 exe on your computer.
  6. Boot your phone in Download Mode.
  7. Use the USB cable and connect your smartphone to computer.
    - wait for Odin to detect the device.
    - if the phone is not recognized you can try to reinstall all the Samsung USB Drivers once more.
  8. Now, return to Odin's main screen and disable the 'Re-Partition' option.
    - if that was already disabled when you've opened Odin, then you can skip this step.
    - do not edit other default Odin settings.
  9. Next, click on the AP button in Odin.
    - this will tell you to find the updating file.
  10. Locate the N910TUVU2DOK2 tar.md5 file and load it in Odin.
  11. Hit the START button in Odin and confirm the installation process.
    - do not press any buttons until the flashing of Android 5.1.1 update is done.
  12. When the update is done you will see the PASS alert shown by ODIN and your phone should reboot in normal mode.
  13. Wait for the first boot process to complete and then use your default login info in order to regain control over your Galaxy Note 4 device.

These were the steps you had to follow in order to complete the updating process of this new ROM.

If the updating process fails, Odin shows the FAIL alert, or any other error is shown by your device, then you will be forced to try and repeat the whole guide more than once.

If you repeat installation you will have to make sure not to skip any steps and that your phone meets all requirements listed above the tutorial.

NOTE:

If ODIN shows the PASS alert, but your device enters in a boot loop, or it gets stuck at the boot animation screen for more than 20 minutes without doing anything, then you will be forced to 'factory reset' the device.

The 'factory reset' steps listed below can be used by those that have installed the new official update over a custom ROM, too.

Here's how to do it:

  • power off the Galaxy Note 4.
  • Boot it in Recovery Mode.
  • Select 'wipe data/ factory reset'.
  • confirm.
  • reboot in normal mode and you're done.

 

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