Compressed firmware package for the Lenovo ThinkPad T61, also tagged 1298MR05, delivered as a RAR archive of about 1.9 MB. Its contents are not described in the name, so extract it and check the image sizes against the flash chip on your board. Technicians use such dumps to restore corrupted BIOS through direct SPI programming. Before writing, back up the original chip with a programmer and confirm the motherboard is the T61 variant this dump came from.
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 →