Toyota and Lexus 3YWF2200.cuw Firmware Catalog Reference

3YWF2200.cuw is a Toyota or Lexus firmware catalog filename. The complete identifier distinguishes this entry from other calibration files, but it does not reliably establish a specific control module, vehicle application or software function on its own.

The .cuw extension identifies the file format used for the catalog entry. No stock or modified variant label is included in the filename, so it does not indicate a particular feature or change in vehicle behavior.