Firmware archive for a 4520s laptop on mainboard 48.4GK06.041, packed as a 2.09 MB RAR. The board number in the name is the key reference, so read the number silkscreened on your PCB and confirm it matches before flashing, since the same model may ship on different boards. Unpack the archive, check the image against the flash chip capacity, and save a full read of the original chip with your programmer first in case the replacement image does not work.
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.
All sources (19)
The same file was posted more than once. If one link is dead, try the next.
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 →