Firmware dump for the MacBook Pro 13 A1708, logic board 820-00875-A, in a 4.85 MB zip archive. Apple numbers logic boards in the 820-xxxxx form with a letter revision, and the number is printed on the board itself. The image is used to reprogram the SPI flash chip with an external programmer when the machine does not boot or has a corrupted firmware region. Read and save the original chip first, since it contains serial and configuration data, and confirm the image 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 @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →