Firmware for a board marked EF10MIX revision 02, with a Spanish note that the identifying label is on the board at U22 and a tag calling it a stable v1 release. The RAR is 2.81 MB. No brand or device is given, so confirm that the U22 marking and the revision on your PCB match before flashing. Compare the image size with the flash chip capacity. Use an SPI programmer to read and save the original contents first, so the unit can be restored if the image fails.
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 →