Toyota and Lexus Firmware 30554500-ii.cuw

30554500-ii.cuw is a Toyota or Lexus firmware catalog identifier. The complete filename identifies this specific entry, but it does not reliably establish the control module, vehicle application or software function.

The .cuw filename and calibration identifier are useful when comparing a catalog entry with a vehicle’s documented software. They do not, on their own, establish compatibility or show what this revision changes.