Small 13.4 KB RAR labelled as a BIOS for a Lenovo ThinkPad listed as T2, carrying the reference 48.4vx01.031, which resembles the numbering on Wistron-made boards. The size is far too small for a full system BIOS image, so it probably contains an EEPROM dump, an EC fragment or notes rather than a complete SPI flash file. Open the archive and identify the contents before use. Compare the target chip capacity with the file size, and keep a backup of the original data before programming anything.
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 @afsbiosfree. 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 →