BIOS firmware for a Microsoft Surface Laptop, model 1769, with the part number M1029273-001 given in the name, presumably the motherboard part. The RAR is about 3.37 MB. Surface devices are glued and dense, so external programming of the SPI chip is often done with clip or after board removal. Use this dump to restore a corrupted firmware chip; read the original chip first, confirm the part number on the board and check image size versus 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.
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 →