BIOS archive for the ZX-H55M motherboard, version 1.11, about 4.6 MB packed in RAR. Unlike other copies of this model, the name makes no claim that it has been tested. The size suggests extra files beyond a single image, such as a flashing utility or several dumps. A technician can program the SPI chip with a hardware programmer to recover a board with damaged firmware. Always back up the original chip before writing, verify the image size matches the flash capacity, and compare checksums after programming.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →