Depending on your M10's processor, you will need a specific PC tool: How to Find and download Firmware file for chinese tablets
: Most use Allwinner (A33/A100/A133) or Rockchip .
Press and hold the button simultaneously. Release the buttons when the Pritom boot logo appears. pritom m10 firmware fix
If an update is available, follow the on-screen prompts to download and install it. Google Help Firmware Fix for a Stuck or "Bricked" Tablet
The very first boot after a complete firmware reinstall requires the operating system to rebuild its cache files. This initial boot cycle can take up to 10 minutes to finish. Once the Android welcome setup wizard appears on the screen, your Pritom M10 firmware fix is complete, and your device is ready for configuration. Depending on your M10's processor, you will need
If the tablet still boots, go to Settings > About Tablet to find the build number (e.g., M10_7731E_... ).
If the tablet won't boot, gently pry the back cover off to find the processor (likely Spreadtrum/Unisoc or MediaTek ) and the white printed Board ID (e.g., CB-MRU 94V-0). If an update is available, follow the on-screen
Appendix: Checklist for a single reflash attempt