Modern MediaTek chipsets employ a "Secure Boot" mechanism. When you attempt to flash firmware, remove a screen lock, or bypass an FRP (Factory Reset Protection), the device's Boot ROM (BROM) checks for a valid authentication file.
Using an authentication file typically follows a specific sequence in professional flashing tools: mt6785 auth file
: Load your firmware's Scatter file into SP Flash Tool . Modern MediaTek chipsets employ a "Secure Boot" mechanism
: Once the tool verifies the auth file, the flashing progress bar should move from red (DA download) to yellow (firmware flash). Bypass Methods (Alternative to Auth Files) remove a screen lock