Firmware dump for a Microsoft Surface model 1943, on a Quanta DA0Z91MBAE0 mainboard revision E, marked as tested and fixed. The DA0 prefix code identifies Quanta, the ODM behind this board, and the revision letter on the PCB should match before flashing. Delivered as a 4.66 MB RAR, the image serves for recovering a unit with corrupted firmware by programming the SPI chip directly. Read and archive the original chip first, as it holds device-specific data, and ensure the dump size matches the flash 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 @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 →