If a device is "bricked" (non-functional due to software corruption), the scatter file tells the flashing tool exactly where to re-upload the factory firmware to restore functionality.
MT6833 scatters include region: tags (e.g., region: emmc_user ). On UFS chips, some partitions live in ufs_user , others in ufs_lu2 (e.g., metadata). Mismatch = write to wrong lun = bye-bye partition table. mt6833 scatter file work
If you cannot find a stock ROM for your exact device, you can generate the scatter file from a functional MT6833 unit: If a device is "bricked" (non-functional due to