The Mack OTA App gives users the ability to remotely update Engine, Transmission, and After-Treatment ECU software in just a few clicks. This app also provides powerful Parameter configuration functionality allowing users to optimize their trucks to fit the intended application. Work on select US10 and newer trucks. Requires the OTA Reciever sold separately (a Wi-Fi dongle that plugs into the OBDII port allowing your mobile device to transmit to the vehicle).