Update is suitable for Alpine HDP-D90 Status Amplifier / Digital Sound Processor.
Resolves the Area Control Detection issue. (If you are unable to access internet while tuning a vehicle, this update enables you to connect to the amplifier without internet.)
The update does not add new functionality or features to the amplifier.
To update the unit, please follow the guide here.
The Alpine Sound Manager application for HDP-D90 (V3.1) can be found here.
The latest firmware for the HDP-D90 can be found here.
