Dell BIOS for the Wistron Vegas Turis MLK board 17841-1, Kaby Lake-R platform, code WX2RR, marked as fully working. The five-digit-dash format is Wistron's board numbering, common in Dell laptops. Packed at 26.8 MB, the RAR archive may hold more than a single image, so check its contents. Flash with an SPI programmer to repair corrupted firmware, keep a copy of the original chip first, and confirm that the image size fits the flash chip on your board.
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 .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 →