Hey guys whats up just had a few questions to ask ya..

First of all i got myself a iphone 3g on craigslist with 4.1....due to having no apple store app on the phone i re jailbroke it and reunlocked it. the phone already was unlocked all i did was put phone in restore mode and Shift and click the jailbreak file 4.1 firmwire and let it do its thing..now i have jailbroke it and installed ultrasnow but it wont unlock for some reason just says searching...or no service.... any help would me appriciated thanks !