Main BIOS dump for the Lenovo Yoga 520-14IKB, type 80X8, delivered as a 4.84 MB RAR archive. The MAIN tag suggests the image for the primary system flash rather than a secondary EC chip. Use it to recover a laptop that powers on without display or is stuck after a failed update, writing it with an external programmer. Read the original chip first and keep that backup safe, check that the type number on the base matches, and make sure the image size fits the flash chip exactly.
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 @biosfilebins. 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →