The Things Gateway: TTIG/TTOG

Hello brocaar

How do i reconfigure the TTIG? I dont wanna use the TTIG with the TTN and i bought this one because its official specified as: “Can connect to any network backend of choice”, so i thought, it were easy to configure any other Backend.

On which way can i configure the packet forwarder to connect to my own loraserver?
How do i get the TTIG in the mode, were it is able to do this? Connect to PC over USB or over Wi-Fi?