I upgraded my iPhone 4 to 4.2.1 recently and i miss my jailbreak. Can someone tell me the easiest way to downgrade back to 4.1 so i can jailbreak again.
If you like, you can stay on 4.2.1 and do a tethered Jailbreak using Redsn0w. Just go to the iphone dev team blog.
Wow that guide has some issues.
Step 2 can be eliminated completely.
Step 3 is nice to know but can be eliminated as they demonstrate later by using tinyumbrella it will edit the hosts file for you anyway.
I don't understand why the guides say you have to be in DFU mode when TU won't even recognize a device that's in DFU mode. I always just use TU to put the phone into recovery, turn on the TSS server, fire up iTunes, Shift-Restore and voila....downgraded.