R-SIM3 supports the new IOS 5.1.1 unlock!In case of fake:Recently,copied R-SIM3 cards have been seen on the market:The packages\circuit and programme of the faked ones are the same with our original ones.Our original ones:The programme of every batch will be updated.Everytime,the compatibility of the original ones will be advanced.At present,the lowest programme version is V4.5 and the highest V4.8...... Also,there are "R-SIM" characters on the programme page.Repeated Tip:Warranty service only for the original ones!