Mt6580 Auth File Download [better]

./flash_tool -c scatter.txt -s COM3 -b -A /path/to/auth_file.auth

The is a security binary (usually named auth_sv5.auth or similar) that acts as a digital handshake between the SP Flash Tool and the device’s boot ROM. Starting with Android 6.0 (Marshmallow) and later versions, MediaTek introduced a Secure Boot and Download Agent Authentication mechanism to prevent unauthorized firmware flashing. Mt6580 Auth File Download