How do you undo Ultrasnow 1.2.3? I tried to unlock my 3GS (4.3.3) because I'm leaving Sunday to a different country for awhile so I wanted to keep my 3GS functional and thought I could just plug in a simcard. But after I installed ultrasnow, it just didn't find any signal at all. it was stuck at "searching". What should I do? This is urgent! As i leave Sunday and I only have tomorrow to get anything fixed!