The scatter.txt file for the MT6781 is unique. It defines exclusive partitions such as gki , vendor_boot , and dynamic partitions specific to Android’s Virtual A/B layout. Standard scatter files from other chips do not map correctly, leading to partition overwrites and hard bricks.

: This text file defines the memory map for your specific device model. Download Agent (DA) : A specific DA_6781.bin

This usually means your DA file is incorrect or the Auth Bypass didn't trigger.