i have a ipod touch 4g now on ios 6 gm. i want to downgrade it. reason only being jailbreak. i dont know why i cant jailbreak it (tethered as found on net). now while downgrade i get errors on itunes like 3194, 1600 and etc. finally i got solution to stitch an ipsw. and to stitch it redsn0w requires .shsh blobs. .shsh blobs on my pc are not valid as it give error APTicket missing. when i check it on redsn0w it shows me that my .shsh blobs for ios 5.1.1 are available. Please help how can i get them.