ok thank you.

i jus got my iPhone from tmobile and is on 8.3, now I want to upgrade it to 8.4 so that I can use the taig 8.4 jailbreak. I tried doing it through iTunes but its giving me the 3194 error. I have the correct version for iTunes for the jailbreak. I have th correct ispw for 8.4 fro my iPhone 6...