RAR archive of BIOS firmware naming A42J and K42JP, two closely related ASUS notebook models that share platform designs. At 1.54 MB compressed, the contents must be unpacked to see the image size and format. Such dumps are flashed with an external SPI programmer to restore boards that will not boot after corruption. Because the file spans two model names, check the mainboard marking against the target machine, verify chip capacity, and keep the original firmware before 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 →