The foundation of the entire BROM flashing process is a stable USB connection. If this connection is flawed, command packets get corrupted.
If the above steps don't resolve the issue, you may need to try some advanced troubleshooting steps: brom protocol error check device environment
Use a high-quality data cable and ensure the device is at least 30% charged. For some devices, you must hold a Boot Key (usually Volume Up or Down) while connecting the cable to force the device into BROM mode rather than Preloader mode. Secure Boot & SLA/DAA Barriers The foundation of the entire BROM flashing process
Windows often misidentifies the temporary BROM state or applies an unstable generic driver, causing immediate protocol drops. For some devices, you must hold a Boot
Request bypass for dimensity8100(mt6895) · Issue #86 - GitHub
In SP Flash Tool , ensure you have selected the correct and Authentication File if required for your specific model. Check Physical Connection : Use a high-quality original USB cable.