How To Flash .nb0 Firmware or ROM via SUT-L3

Some stock roms / firmware packages use .nb0 extension and cannot be flashed using the likes of SmartPhone flashtool, Spreadtrum Update Tool, etc.

Some device manufacturers though, have made it possible for its official software updates in .nb0 extension to be flashed via the phone’s stock recovery. This feature may not be available to all devices, hence this post.

With Software Update Tool (SUT) you can easily flash your device stock firmware via a Computer. The process explained below is very simple. Read and follow the guide carefully.



Flashing .nb0 firmware files

  • Download and install your device driver on your PC
  • Download Software Update Tool (SUT)
  • Install and run SUT-L3 on your Computer
  • Unzip the downloaded .nb0 firmware from its zip archive and place in any folder. Extracting to desktop should be cool.
  • Reboot the device to fastboot / download mode / bootloader. (adb reboot bootloader, or power off then use button combo)
  • Connect device to PC
  • From SUT-L3 interface, click on or the empty box and select the extracted .nb0 firmware and click Next
  • In the next page, select Erase User Data, then proceed
  • The flashing should now commence. Wait a few minutes for this process to complete.
  • Disconnect the device and reboot!
  • Done!


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  1. Dave October 30, 2018
    • Collins Edim October 30, 2018
  2. dj April 26, 2018
  3. chenna mourya August 27, 2017
  4. JR March 16, 2017
  5. Dj February 23, 2017
  6. sanakr February 5, 2017
    • Leakite February 5, 2017
  7. Prince Verma October 15, 2016
  8. Collins Edim October 1, 2016
  9. nut kosal September 30, 2016

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