Working BIOS image for the Wistron-made board 15249-3, project name DUNES with an SKLU tag that usually denotes Skylake-U processors, marked OK. The binary is 16 MB, sized for a 128 Mbit SPI flash. Wistron's five-digit numbers with a dash revision are common on Dell laptops built by that ODM, though no brand is named here. Use it to reprogram a corrupted BIOS chip with a programmer; match the board number and -3 revision on the PCB and back up the original chip, which holds service tag data.
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 @lappysan. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →