untethered jailbreak 4.3.1 on all devices howto

PwnageTool 4.3 allows you to jailbreak iOS 4.3.1 on all devices besides the iPad2
That includes:

• iPhone3GS
• iPhone4
• iPod touch 3G
• iPod touch 4G
• iPad
• AppleTV 2G

First a word of advice: ultrasn0w users don’t update yet! ultrasn0w is not yet compatible with 4.3.1.

Download PwnageTool 

Download iOS 4.3.1 for your device

iPhone4

iPhone3GS

iPad

iPod touch 3G

iPod touch 4G
AppleTV 2G

Run PwnageTool, select "Expert Mode" and choose your device.

Select "Browse for IPSW..." and select the downloaded firmware for your device.

PwnageTool will automatically active your phone and prevent Baseband update so you can just click "Build".

Save the custom firmware somewhere you find it later (desktop) and wait a few minutes.

Now follow the instructions on the screen.

If it doesn't work on the first try, just do it again.

If you've done it right you should see this screen.

Now open iTunes and click "Restore" while holding the alt key.

A file dialog opens, select the custom firmware you saved on your desktop.

Select "Restore" and wait till it's done.

After that iTunes will restore you're last backup.

Now we are done, enjoy your jailbroken 4.3.1 device :)

Known Problems:

Error 1601 during restore

If you are updating from a jailbroken 4.2.1 and u used tiny umbrella, remove the 

74.208.10.249 gs.apple.com

line from your /etc/hosts file and restart iTunes.

No Service

Do the same procedure again but this time uncheck "active phone" in Pwnagetool.

Thanks to the iPhone Dev Team