BIOS and EC firmware set for a board identified as K66_G_X133_V02 with an Intel Celeron J4105 processor, delivered as a 6.72 MB RAR archive. No brand is given, so the board marking is the only reliable reference; match it exactly on the PCB. The system BIOS is written to the SPI flash and the embedded controller file to the EC or its own flash, which governs power-on, charging and keyboard functions. Read and keep the original contents before writing, and make sure each image size suits its target chip.
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 →