Im trying for the last day to upgrade from 4.2.1to 5.1.1 or 6.0.1 my ipod touch 4g
I download the firmware, make the custom with sknowbreeze, delete itunes and install the new 11 itunes,
put my ipod on dfu mode open itunes shift and sellect the custom firmware, but very time I have error 1601,1602 and 3194 I modified the host with #74.208.105.171 gs.apple.com but I still having the same errors
I verify the cable and usb , I do a ipod backup without problems But I cant do the upgrade..

some help please