Toyota 89663-06A31-_AVT_Stage1_E2.bin Firmware
A catalog overview of Toyota calibration 89663-06A31 and its AVT Stage 1 E2 file label.
89663-06A31-_AVT_Stage1_E2.bin is cataloged under Toyota calibration identifier 89663-06A31. The 89663 part-number family is associated with engine control module calibration software, which governs how the engine controller manages functions such as fuel delivery, ignition timing and emissions control. That module-family association is tentative for this file because the catalog entry does not identify a vehicle or controller.
What the file label indicates
The filename adds AVT_Stage1_E2 to the calibration identifier. This is a variant label, but its precise meaning and the changes made in this file are not documented by the related catalog name. The label alone does not establish a particular performance gain, emissions change or compatible vehicle.
The base entry 89663-06A31 identifies the calibration family member. It should not be treated as evidence that every file carrying that identifier has the same software contents as the AVT_Stage1_E2 variant.