So i have shsh blobs saved for ios 6.1.2, i have the 6.1.2 ispw for ipod touch 4, (what i have) then everytime i try downgrading with redsn0w it freezes at waiting for device. Then when i try downgrading with itunes it gives me an unknown error. Even when i try tethered jailbreaking with redsn0w on 6.1.3 it gives me an error! Help!