Good news guys!
UPDATE: If you’re using an AT&T iPhone, you can officially unlock it now so that you won’t to do all these. Click here.
Untethered jailbreak for iOS 4.3.1 using redsn0w 0.9.6rc9 is now available for download:
What you need:
There are some issues Musclenerd warns with ultrasn0w:
“ultrasn0w unlockers remember: please stay away until we get a chance to fix the problems 4.3.1 has with older basebands”
” … you’ll be stuck with just one bar of signal strength being shown (despite actual strength), so probably better to wait”
For iPhone 4 users, download the files above and follow on screen instructions with redsn0w.
Detailed instructions with screenshots to follow.