A single wrong byte in the start_addr field can brick the device permanently.
A scatter file is essentially a .txt file formatted for the flashing tool. It lists partition names, sizes, and memory addresses. MT6577 Android scatter emmc.txt
partition_index: SYS0 partition_name: PRELOADER file_name: preloader_item.bin is_download: TRUE type: SV5_BL_BIN linear_start_addr: 0x00000000 physical_start_addr: 0x00000000 partition_size: 0x00040000 Use code with caution. Copied to clipboard Android Scatter File Structure Overview | PDF - Scribd A single wrong byte in the start_addr field