First you will need to download Pwnagetool 4.3.dmg from HERE
And iPad 1.1, 4.3.1 firmware from HERE
Once that’s done create a new folder on your desktop and name it “pwnage”.
Double click the pwnagefile you just downloaded and drag the icon from the installer over to the desktop folder you just created.
You should now have this
Double click Pwnagetool and click OK to accept the release form.
Click Expert settings and the iPad, then the blue arrow on the lower right to continue.
Click “Browse for IPSW” and locate the ipad firmware file you downloaded earlier in your “pwnage” folder. Click Open.
Unless you know what you are doing just click build and a “Save to” window will open, Save in the “pwnage” folder.
Pwnagetool is now building your new firmware.
At one point, about 2 minutes in, it will ask for your administrator password, (if you have one set for your computer),enter it, and kiss your children goodnight…
Kick back and don’t touch anything for about ten minutes (or until it’s done, depending on what kind of super computer you have.)
Now, on to the DFU tutorial…
In order to properly pwn your device you will need to put your iPad in DFU mode via pwnage tool, (there is a “standard” way of doing this too, it won’t work. I will explain this in an advanced pwnage tread)
DFU=Device Firmware Upgrade
Right after pwnagetool is done creating your firmware it will ask you to connect your device to pwn it (it will show an iphone, but means your ipad)
Once you connect your ipad it will start counting down for you to get ready, its pretty self-explanatory.
Most important is that the timing has to be exactly right; it’s not crucial to get it right the first time. It will tell you that you failed and you can just try it again, no worries..
Once you get it right you can quit pwnagetool and open iTunes which will tell you that you have your device in recovery mode and need to restore.
Hold down Option and click Restore, find your new firmware file in your "pwnage" folder and click OK.
Let your ipad restore and reboot. Done! Youre Pwned and jailbroken!