BIOS image for the ASUS PRIME B450-PLUS desktop motherboard, an AM4 board, contained in a 20.2 MB RAR archive. The name gives a 16MB flash size, so the binary corresponds to a 128 Mbit SPI chip. A technician can use it to revive a board left dead by a failed update, either by programming the chip directly with a clip and programmer or through recovery tools. Save a copy of the current chip first, since it holds board-specific data like the MAC address and serial, and confirm the size matches the 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 →