Hi i tried upgrading to 1.1.3 today and went titts up and now have spent the last 7 hours trying toget my phone back to 1.1.2 jaibroken working with my other o2 sim like it was before! ive gone down to 1.1.1 then up to 1.1.2 and now any sim is saying it cannot unlock this phone!? im going crazy here! i miss using my iPhone and its only been 7 hours! any help any one?