Iphone 4 16GB (JB) will SAM sort a no service is or will i have to loose 4.0

[teadigger]

Hi I have a iphone 4 16gb with 4.0 orginally on vodaphone so did JB and ultrasnow unlock tried several sim and all worked fantastic. Inserted my O2 sim after a chop from my current 3gs, only issue was no 3g. So I download xsellize great, worked a treat asked if i wanted updated carrier settings clicked yes (was that the doh). Since I have had No service when you chuck a sim in it says Restricted Network and no service. I have not had this problem any ideas

I have uninstalled ultrasnow and xsellize still no joy, I have no saved shsh and I can see no way round but to updated to 4.2
Anyone got any ideas.

Many thanks teadigger

 

[teadigger]

any ideas

Hi spent the past two days looking and looking, can find nothing so looks like it will be 4.2 and loose unlock. anyone with ideas.
many thanks teadigger