Firmware newest Version: RUTX_R_00.07.01.4
Network -> Network Operators -> Connection mode
It is not possible to switch from "Auto" to "Manual". Of course, it is also not possible to switch to "Manual-Auto". The error is: "Error: Sim card section not found". I have tried two mobile cards. A Vodafone- and a Telekom-Card from Germany. Regardless of whether only one card is inserted in the device or both.
Both cards run in the cell phone or other routers (Fritzbox / Huawei) without any problems including changing the operator. I am currently in Italy, so I need to change the network (operator).