BIOS for the ThinkPad T61 with a modified whitelist, as the name indicates, supplied as a 2.02 MB ZIP. ThinkPad firmware normally blocks unapproved wireless cards, and whitelist-free images are used to allow third-party Mini PCIe cards. Version details are not given, so inspect the file before use. Write it with an SPI programmer or suitable flashing method, keep a full backup of the original chip, and confirm the image size and board variant match your unit.
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 →