Some devices require the battery to be connected to trigger BROM, while others require it to be disconnected. Try the opposite of your current method.

To troubleshoot and resolve the BROM protocol error, follow these steps to check the device environment:

The most frequent culprit is the driver. You should use a dedicated tool like to uninstall all existing MTK or VCOM drivers, then manually install the latest MediaTek Preloader/BROM drivers . For best results: Ensure Driver Signature Enforcement is disabled on Windows.

Brom Protocol Error Check Device Environment

Some devices require the battery to be connected to trigger BROM, while others require it to be disconnected. Try the opposite of your current method.

To troubleshoot and resolve the BROM protocol error, follow these steps to check the device environment: brom protocol error check device environment

The most frequent culprit is the driver. You should use a dedicated tool like to uninstall all existing MTK or VCOM drivers, then manually install the latest MediaTek Preloader/BROM drivers . For best results: Ensure Driver Signature Enforcement is disabled on Windows. Some devices require the battery to be connected