Programmer read-out image for Apple logic board 820-4924, stored as an 8.00 MB .bin file. The name gives no revision or EMC number, only the outimage tag typical of a dump saved straight from a programmer read. Use it to restore the EFI firmware on the SPI flash chip when a Mac fails to boot or shows firmware corruption. Confirm the 820 number on the PCB, read and keep the original contents, and ensure the chip capacity is 8 MB before programming.
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 →