Programing over GPRS Shield

Hi,
Sorry i'm very new to MCU programing, maybe you can give me some guidance for this.
i bought a opentracker v2 (An ARM-based GPS/GLONASS Tracker Board joining Arduino At Heart | Arduino Blog)

it has a quectel m95 modem on board, and i want to use this modem to reprogram the Cortex-M3 CPU for OTA
firmware and configuration update.

in the modem manual, there is an at command which connects the modem to a tcp server and tunnel the ip packets to the uart output of the modem 1:1.

maybe someone can tel me what it needs to get this working or point me into the right direction.

thanks,
christian