BIOS archive for MSI motherboard MS-158L1, version 2.0, marked as working in the name, in a 5.29 MB RAR file. MS- codes are MSI's own board numbers, so this board was designed by MSI. Extract the image and check that its size matches the SPI flash chip on the board. Confirm that the MS-158L1 code and version 2.0 printed on the PCB match. Read the original chip with a programmer and keep that backup before flashing, then verify the write so a damaged or mismatched image does not go unnoticed.
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 @pkbiosbdv. 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 →