Samsung R420 BIOS image tagged okkk, suggesting it was confirmed working. The binary is 2 MB, the size of a 16 Mbit flash chip, so it differs from the 4 MB images for the related RV420 and should not be mixed with them. Technicians program it directly onto the SPI chip to cure no-post or black screen faults caused by corrupted firmware. Check the chip capacity and the board number on the PCB, and save the original contents before writing.
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 →