Umidigi A9 official stock firmware will help you flash and restore your phone to its default factory state. It will remove root, virus, un-brick, and fix your device if it’s stuck on boot logo. If your phone lags, after flashing it should be better.
Additionally, you should consider making a backup of your current firmware, and all other important data on your phone. Flashing will completely erase your phone. Also, 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.
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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.