I have a iphone 3gs running on IOS 4.3.5 which someone jailbroke for me. I purchased it from a friend in Canada and now live in Europe, so he got it unlocked by the Canadian service provider - so now i guess it's called factory unlocked. When I put the SIM from the service provider "Ben" in Holland, the phone shows 1 little bar, then "Searching..." and sometimes 'No Service" . I have tried to do a restore with itunes but get the error message "The iphone could not be restored, An unknown error occured: 3194" . What is going on? Is the problem from the jailbreak? or what? My friend did it for me, so I am not even sure how that works. Cydia is on the phone, but is that the jailbreak program? How can I remove the jailbreak? Help please!!! ---------- Also, I am using a PC, not a MAC to connect my iphone to itunes.