Download this Umidigi Bison Pro factory (stock) firmware to flash and restore your phone to its default factory state. After flashing, the firmware will remove root, clean virus, un-brick, and fix all software related faults.

You should consider making a complete backup of your phone data, because flashing may erase entirely everything on the phone. We also advice that you should only flash your device if you actually know what you’re doing; to avoid messing up your device, or turning it into a brick.

It’s also important that your device is charged up to at least 30% so the process is not interrupted by low battery, and consequently- shutdown.

If there’s a broken link, do not hesitate to report via the comments section or use the contact form.

Build | Release Date Region Firmware
BISONPRO_V1-0_20210918 Global Download
BISONPRO-TR_V1-0_20210914 Turkey Download
BISONPRO-RU_V1-0_20210910 Russia Download
BISONPRO-E_V1-0_20210821 Europe Download

Flashing instructions

You need a tool like SP Flashtool, Miracle Box, AfterSales SWD Tool, etc., to flash this firmware. Get a working USB cable, then follow the instructions below-

  • Unpack downloaded firmware to an empty folder
  • Make sure you’ve installed the required drivers on your PC.
  • Launch flashtool and load the firmware. You might need to wait a few seconds for it to process completely
  • Now power off your device and click here to read full flashing instructions if using SP Flashtool.

If you need any help on this device or flashing instructions, or you’ve got other contribution- do not hesitate to post in the comments section below. We do our best to reply and answer your questions.