Hy guys, i would LOVE to downgrade my IP4 that as now ios 7 to a more performant ios 6. In the past, i saved some shsh on my computer with TUmbrella and the other via Cydia. Now i saved all the shsh on my pc but when i try to creare a customize ipsw with iFaith i receive this error with all my ios 6 shsh: I tried with my ios 5.1.1 and all went good, i create the new and customized ipsw but i still don't try this causa i hope that will be a chance to downgrade on ios6... Please can someone help me with my problem? How can i do? It's possibile to downgrade to ios5 and then maybe upgrade to ios 6? UPDATE: i tried to use the last redsn0w tool and this one is triyng to create a custome ipsw accepting my 6.1.2 shsh, maybe it's ok lke this???