BIOS version 1.17.1 for the Dell OptiPlex 7050 desktop, linked in the name with the code C1R0H, delivered as an 8.17 MB ZIP. C1R0H appears to be a Dell board or part identifier. A file of this kind may be an official update package rather than a raw dump, so check whether it contains a programmer-ready image before writing it to the SPI chip. When reflashing by hardware, save the original contents first, since they hold the service tag and Management Engine 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 @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 →