Firmware for the MSI B450M-A PRO MAX desktop motherboard, model code MS-7C52, noted in the name as a 32 MB BIOS. This AMD B450 Micro-ATX board uses a 32 MB SPI flash, so the image is meant for a chip of that capacity. Technicians use such a file to recover a bricked board with a CH341A or similar programmer when BIOS Flashback or normal updating fails. Save the original chip contents before overwriting, since they hold board-specific data such as the MAC address, and confirm that the MS-7C52 label on the PCB matches 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 →