ASUS BIOS package for the U43JC laptop, board revision 2.0, sized for a 4 MB SPI flash chip and stored in a ZIP archive of 1.91 MB. A dump like this is used to restore a corrupted or erased firmware chip with an external programmer such as a CH341A when the machine powers on with no display or loops at startup. Before writing, read and save the original chip contents, check that the chip really is 4 MB, and confirm the board revision matches. An image of the wrong size will not fit the flash.
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 →