ANSWERS / IPHONEAsk Question Unlock iphone 3gs on ios 6.1 LIKE TWEET SHARE PIN SHARE POST MAIL MORE 0 karimla131 • February 5, 2013 at 3:50pm Hi ,, i want to jailbreak and unlock iPhone 3gs NB on windows is this possible ??? thanks Follow · CommentAnswers0 hct • February 9, 2013 at 3:03pm Using ultrasn0w to unlock, make sure you have baseband firmware 5.13.04 Comment