Hi everyone! Quick question about upgrading any assistance would be much appreciated. I've tried to upgrade using Snowbreeze for 4.3.1 but I keep getting error 3194 regarding Apple server verifying the upgrade after building the custom software and putting the phone into DFU mode using iREB, etc. I read a little about tweaking your iTunes hosts file to point to Saurik's server or just deleting it entirely as a workaround but I've not been able to make this work and still get error 3194. Does anyone know how to make this work, or are you pretty much only ever to upgrade to the current software version that is available?? Thanks! Please note I am not trying to downgrade the software, just upgrade to a version less than current. This is because ultrasn0w 1.2.2 is still an unknown quantity whereas 1.2.1 is verified working to unlock on 4.3.1.