Because this is an OEM board, . Use these sources:
Because these are generic boards, there is no single "official" website. You will likely find the firmware in the following places: zl782-mb-v2.1 firmware download
Before downloading any files, you must confirm this is your exact board. Manufacturers often release multiple versions of the same model with different internal components. Because this is an OEM board,
: Look for the "ZL782-MB-V2.1" text printed directly on the green circuit board (PCB). Because this is an OEM board
The ZL782-MB-V2.1 is a printed circuit board (PCB) version number, most commonly found in: