To fix this, Alex must check every "environmental" factor that could be blocking the connection: USB Drivers : The most common culprit. Alex might need to reinstall the MediaTek (MTK) USB VCOM drivers
Boot ROM is the hard-coded boot code in the processor that executes first. brom protocol error check device environment
Before the phone boots into the Android operating system, the BROM checks for a USB connection to a computer. If it detects a specific signal, it enters a low-level download mode. This mode allows service software to write data directly to the device storage chips, bypassing Android security locks and system corruption. Root Causes of the "Check Device Environment" Error To fix this, Alex must check every "environmental"
Confirms whether the phone reads as MediaTek USB Port (BROM) or MediaTek Preloader VCOM . If it detects a specific signal, it enters
: Older versions of bypass utilities may not support the security protocols of newer Dimensity chips. Driver Conflicts
Run the bypass tool, click "Crash BROM" or "Bypass SLA/DAA", and connect the powered-off device while holding the required hardware key combination (usually Volume Up + Volume Down, or just Volume Down).
Download and open the LibUSB-Win32 wizard. Hold the device's volume keys, plug it into the PC, and instantly select the transient MediaTek USB Port (COMx) entry in the wizard to install the device filter. This forces the OS to hand exclusive control over to the flashing utility. Step 3: Implement an Authentication Bypass