Firmware is not interchangeable across these variants. Always match the exact chip version and board revision (e.g., Hi3798MV200-DM100 ).
: For stubborn "bricks," the "toothpick method" became legendary—pressing a hidden button inside the AV port while plugging in power to force the box into recovery mode . hi3798 firmware
Many users host firmware collections on Google Drive for specific hardware IDs. How to Flash/Update Firmware is not interchangeable across these variants