Firmware image for the Apple A1707 MacBook Pro, EMC 3162, logic board 820-00281, in an 8 MB binary marked outimage, usually meaning a complete chip dump ready to program. Apple 820- numbers identify the logic board and should be checked on the PCB. Technicians use this to recover boards stuck without boot after firmware damage, writing the SPI chip with a programmer. Read and archive the original contents beforehand, because machine-specific data such as serial number and Wi-Fi identifiers live in that 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 @efibios. 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 →