A BIOS / firmware dump. Shared as “N.M338.801.BIN.BOOT1” — a .boot1 file, 2.00 MB.
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 @pepeelectronica. Enginerys does not host this file.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →