Recovery is not seandroid enforcing Galaxy S6 t-mobile g920t, how to fix

If you have just gotten into trouble such as "RECOVERY IS NOT SEANDROID ENFORCING" on your T-Mobile Galaxy S6  G920T, you are not alone. This dreaded error message appears if you have just like us who messed-up from rooting the Galaxy S6 right after updating to Android 5.1.1 update which will not tend to work at this moment.  The phone will just stuck on logo, with the error "RECOVERY IS NOT SEANDROID ENFORCING" instead, and will not boot up normally.  So just try this following solution, this might help you out to fix it and return back your phone to its normal booting sequence.

Solution 1: Set the Galaxy S6 into Download Mode

Right at the screen where it stuck in "RECOVERY IS NOT SEANDROID ENFORCING" and the Samsung Galaxy S6 logo press this 3-button combination Home,Volume Up and Power buttons. Once a warning messages showed that says press volume up to continue and press volume down to cancel, press the volume down button instead.  Wait until the phone reboots and see if it goes through the Samsung screen and booted further into the home screen. However, if it still stuck on the error screen proceed and try the second solution below.

Solution 2: Restore the Android 5.1.1 Update Firmware

If the phone continues stuck in "RECOVERY IS NOT SEANDROID ENFORCING" error screen, you may apply this solution. This will repair the Android 5.1.1 firmware that has been compromised from rooting. The Android OS "kernel" and "bootloader" might have slightly damaged or in mismatched staged causing the troubled error continues. So the only way to fix it is by reinstalling the original and official Android 5.1.1 firmware update.

This approach is technically what we've used to fully unroot the T-Mobile Galaxy S6 (SM-G920T).  It is the proven and very effective method and had been used even before the Galaxy S6 exist. Doing so will restore the entire Android 5.1.1 firmware build and wipes out any modification that has been made onto your Galaxy S6. So check it out and follow the step-by-step  guide below.

Step 1: Grab the necessary tools

Just make sure to grab the Android 5.1.1 stock firmware for Galaxy S6 SM-G920T. If you have the Galaxy S6 Edge SM-G925T that also showed the same trouble, you may also apply this solution but use the Galaxy S6 Edge SM-G925T stock firmware.

Grab the official Android 5.1.1 stock firmware through this pages
- Samsung Galaxy S6 Stock Firmware
- Samsung Galaxy S6 Edge Stock Firmware

Download tools:
- Odin3_v3.10.6 & Galaxy S6 USB driver

Step 2: Preparations

  • Extract or “unzip”  the firmware file after downloaded so that you’ll get the  "Odin flashable" tarball stock firmware  file.
  • Make sure the battery is re-charge or at-least still got 60% remaining power.
  • Activate the USB debugging mode in the device settings, from Home screen>>Settings>>Developer option, then mark check the box that says USB Debugging Mode.
  • Turn off the "Reactivation . Some other Galaxy S6 version this feature is pre-installed.  To turn it Off just go to Settings>>Security>>Reactivation Lock and then unmark check the Reactivation lock option. You may need to enter your password on this process.
  • Use the supplied USB data cable of your Galaxy S6.
  • Use Windows PC to this process as this will not work on MAC computers.

Step 3: The process

1. Run Odin on your PC desktop
2. Boot the Galaxy S6 into Odin download mode.
Turn it off, once completely shut down  hold down the ‘HOME’ + ‘VOLUME DOWN’ buttons and press the ‘POWER’ button for about 2 seconds until a WARNING! Screen appears. Press the ‘VOLUME UP’ button to continue or enter Download Mode.
3. Connect the phone to PC via USB. Then make sure you can see as phone “Added” in Odin log box or highlight the COM:ID once the device is detected,
4. In Odin window, Do Not ever tick ‘RE-Partition’ , just leave the ‘Auto Reboot’ and ‘F. Reset Time’ mark as checked.
5. Click on Odin’s AP button then browse and load the tarball file.
e.g. on T-Mobile Galaxy S6  SM-G920T:
6. Click on “Start” to flash the stock firmware
7. Wait until the flashing successfully finishes, you’ll just see a word ‘PASS’ in Odin. Once finish flashing, disconnect the phone from PC.

You may wait until the device completely reboots as the until in reaches in the home screen.

If ever my solution did not resolve the "RECOVERY IS NOT SEANDROID ENFORCING" on your T-Mobile Galaxy S6  G920T, I can only suggest you to visit your nearby service center. The folks out there can fix it for you.