UMA firmware build for the Casper CMY MB55, a board marked MB45II4 v.01, meaning the version for units without a discrete GPU that rely on integrated graphics only. It comes as a 2.97 MB zip intended for reprogramming the BIOS SPI chip with an external programmer such as a CH341A. Fitting it to a discrete Nvidia board may cause no video or boot faults. Check the PCB label, back up the existing dump first, and confirm the image size matches the chip.
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 @biosfiles. 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 →