A BIOS / firmware dump (board 18836-2). Shared as “Mi NoteBook XMA1901-FI A1_CML 18836-2 BIOS 100% WORKING.rar” — a .rar file, 11.7 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 @skclappybios. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →