Raw 1MB firmware dump from a MacBook model A2251 logic board 820-01949-07, read from the chip at location U3060. The 820-xxxxx-xx numbering is Apple's own scheme, and the final digits indicate the board revision. Repair shops use such dumps when replacing or reprogramming the corresponding chip after liquid damage or a failed component. Write it with a suitable programmer only to the matching designator, keep a backup of the original chip, and remember that Apple security chips can tie data to a specific board.
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 @laptexlaptopbios. 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 →