Firmware dump for the Dell OptiPlex 5050 mini tower, platform name AngelfiSh MT, board number 16509-1, with a 16M capacity noted in the name. Five-digit numbers with a dash suffix follow the Wistron pattern, the ODM behind this desktop board. Since the image targets a 16 MB flash, it should only go onto a chip of that size. Back up the original contents, which hold the service tag and system data, before programming with an external SPI programmer, and confirm the board number.
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 →