BIOS image for the ASUS K42JR, with a doubled ok in the name suggesting it was tested and confirmed working. No board revision, chipset or GPU variant is given, so the details must be verified on the board itself. The 4.00 MB raw dump is written directly to the SPI flash using a programmer such as a CH341A or RT809. Back up the original chip contents before writing, check the flash part is 4 MB, and compare the board markings with other K42JR dumps if graphics variants differ.
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 .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →