Thanks to geohot, we finally can jailbreak iPhone 3G & 3GS, and iPod Touch’s with the newest 3.1.2 firmware. I had a little fun trying to get this working, but after finding the right sources, and the right guides, I got it. I wanted to make a simplified guide that would help join all of the different peoples ways to one of the easiest.
First, thanks to geohot at http://blackra1n.com/ and the redmondpie.com guys.
So, the steps.
Before we start, BACK YOUR PHONE UP, you will lose all data on it.
1. Get the latest version of iTunes.
2. DO NOT update your device with iTunes!! Download the latest custom firmware from…
3. Holding the left-shift button, click the restore button in iTunes, and select your custom firmware file. Let iTunes restore your phone this way. Again, do NOT download the firmware through iTunes. If you were not prompted to select a file, you didn’t do it right.
4. After the phone is restored, before you install the carrier updates, and restore your backups back to the phone, download blackra1n here.
5. Run blackra1n, click the “make it ra1n” button, and let it jailbreak.
The process takes about 10 – 15 seconds, so if you go any longer than that, you need to hold the power button and the home button down until your device shuts off, power it back on, and redo step 5 until it does work.
Go here if you want to learn about tethering your iPhone.
Enjoy!
Thanks man, your guide and especially the tethering link works nicely