BIOS firmware for the Esonic HM55MAL2 motherboard, 813 KB in ZIP. The HM55 token indicates the Intel HM55 mobile chipset, used by Esonic on compact boards. No version number or flash chip is stated in the name. Extract the archive, compare the image size with the SPI chip, and use a CH341A or similar programmer for recovery. Read and save the original chip first, then write and verify. Check that the model printed on the board matches HM55MAL2 before flashing.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →