BIOS firmware package for the ASRock Z77 Extreme4 desktop motherboard, version 2.90, supplied as a 4.33 MB zip archive. The Z77 chipset places the board on the Intel LGA1155 platform. Unpack it to find the BIOS image, which can be flashed through the board's built-in utility or written directly to the SPI chip with a programmer when the board no longer posts. Confirm the exact model on the PCB first, because the Extreme4 and Extreme4-M images are not interchangeable, and save a copy of the original chip contents before writing.
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 →