Toyota and Lexus Firmware 89663-78D20-A

89663-78D20-A is a Toyota or Lexus firmware identifier related to the catalog entry 89663-78D20. The available catalog name does not identify a vehicle, control module or software function.

The shared base identifier connects the two entries, but it does not establish what the -A suffix represents or whether the files are interchangeable. A vehicle-specific service record or controller identification would be needed to establish the application.