Firmware dump for an Apple MacBook built on logic board 820-00165-A, EMC 3178, from the 2017 model year, and marked as tested OK. At 8 MB the raw binary matches a 64 Mbit SPI flash chip, the size commonly found on Mac boards of this period. Technicians use such an image to recover a board that will not boot or chimes abnormally, writing it with a programmer. Read and keep the original chip contents first, since serial and configuration data stored there are board specific, and verify the 820 number on the PCB.
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 @ithinkhs_casediscussion. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →