BIOS package for the K50AB laptop, with AS220 most likely denoting firmware version 220, stored as a 785 KB zip. It is intended for this K50A variant only, so confirm the model sticker before flashing. Typical use is restoring a board stuck at a blank screen due to a damaged BIOS, via vendor recovery or an external programmer. Read and save the current chip contents before erasing, and verify the image size matches the flash capacity.
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 @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →