The 2021.10b software release (original date 2021) can run on firmware 3201 (2022 version) if patched correctly. This enables coverage up to late 2021 / some 2022 models.

Delphi 2021.10b software update for Cars and Trucks is a significant diagnostic release designed for use with the

: After connecting your device via USB and testing the connection in the "Hardware Setup" menu, always perform the firmware update. The device will typically flash red during this 3-minute process—do not disconnect it.

3201 works best with 2021.10b – do NOT use with newer software (e.g., 2023) as it may brick the interface. For trucks, always run PIN detection before coding.

Perform injector coding, steering angle sensor calibrations, and service light resets. Installation and "MHH Top" Context