Hi there
Really sorry for replying you late, cause I was ill and rest in hospital where there is no internet for right ear surgery, and my colleague forget to reply you here, hope you can understand!
1, please check the following link to download the user manual:
https://mega.nz/#!QE1DQYiS!2g2VJdor8YI7 ... ZDCVwckUW42, the item is Wince system software, and there is no freqently new version firmware released like the Android system. So if there is no problem with the radio, we do not suggest the client to update it.
3, can you tell me when did you bought the radio? Can you give me your order number? So I can check if there is upate for it.
4, please to go setting---bootlogo, input password 8888 to set that.
5, please make sure your internet SIM card is 3G WCDMA bandwidth SIM card, because the radio is only support that. And then please make sure the 3G dongle compatible with the radio, we normally suggest clients to buy the dongle from us with the radio.
Best Regards!