orbit can't find mobile networks

[phatsteve]

Hi, I have a problem with my O2 Xda Orbit not connecting to any mobile network.
I have tried O2, vodafone and orange sims, but all the same, the searching for network
icon nerver connects. The device details are:-

Rom version 3.4.206.2 WWE
Rom date 4/18/7
Radio version 03.06.90
Protocol version 4.1.13.50
Ext Rom version 3.4.206.103

I'm quite happy with everything else on the device, gps works, Wi-Fi works
TomTom works, it's just that I can't make or receive phone call or texts.

In the O2 connection settings my only option is:-
O2 UK Post Pay_GPRS

I have tried the auto configuration, but still no luck.

Do I need to upgrade just the radio?
Any help greatly appreciated.
(if this has already been dealt with, could someone point me in right direction?)
Thank You

[phatsteve]

After further research it seems I am the victim of an insurance scam, I bought this phone off ebay in good faith, but it seems it has been blocked by uk networks, most likely because it was reported as lost or stolen and claimed on insurance.