BIOS image for the ASUS Prime B450M-A motherboard, intended for its W25Q128JV flash chip. The W25Q128JV is a 128 Mbit (16 MB) Winbond SPI device, so the extracted file should be 16 MB. The board uses AMD's B450 chipset for Socket AM4. Write it with an external programmer when a failed update leaves the board dead. Dump the current chip first to keep the MAC address and serial, and verify the board model 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 .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 →