BIOS firmware for Microsoft Surface Laptop 4, with model numbers 1950 and 1951 in the name, and an OK note suggesting it was verified. The RAR archive is 4.92 MB. The name lists no board number or revision, so confirm against your unit. Such images are used when reprogramming the SPI flash with an external programmer on a unit that no longer boots. Read and store the original chip contents first and make sure the dump size equals the flash chip capacity.
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.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 4 Jan 2024 | Open file on RM Schematics |
| @generalbios | 4 Nov 2024 | Open file on RM Schematics |
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 →