Firmware archive for the Microsoft Surface Go, model 1901, 64GB version, marked as tested. The name gives no board number, so confirm the model on the unit and the board. Surface repairs at this level involve reading and rewriting the SPI firmware chip with a programmer, usually requiring careful clip access or chip removal. Save the original contents first, as device-specific data may reside there. Make sure the image 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 @generalbios. 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 →