While holding the keys, connect the high-quality USB cable to a backend motherboard port on your PC.
Having the correct BROM driver installed on your PC is mandatory for several critical software procedures:
Look for a subfolder matching your OS architecture (e.g., Win10 or x64 ) and select the .inf file (often named usbser.inf or cdc-acm.inf ).
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The Boot ROM is a tiny, immutable program baked directly into the CPU silicon. It represents the very first code that runs when your MediaTek-powered device receives power. This mode operates at a level so fundamental that it remains accessible even when Android won't boot, the screen stays black, or the device appears completely bricked.
For batch backup of multiple partitions: python mtk.py r boot,system,vbmeta backup_
If the driver installs but your device still isn't detected in Flash Tool, your phone might be stuck in Preloader or powered off. You must force BROM: