I had mentioned previously that Spirit had finally uploaded their untethered jailbreak for iPod, iPhone and even iPad. But be aware that Spirit isn't a carrier un-locker. It means that, it won't unlock your phone if you are not using iPhone's purchased directly from Maxis or Digi. If you are currently using tethered jailbreak on your gadget, please restore it first before installing Spirit. Please take note, do not upgrade if you're using an unlock on your gadget as this will disable your unlock. But again, you can downgrade it to OS 3.1.2 using SHSH blob for that version if you accidentally did. (duh~!)
Please take note that jailbreaking your device will void the warranty so please remember to backup. Whatever you do, backup by syncing with iTunes. I know some of my friends who never did this, and may god bless them. SO here's the download for WINDOWS & MAC OS. This is an updated version which the previous version would delete some of your pictures and some other minor error issue. And if you still encounter error code c0000005, you can try changing the compatibility mode to Windows 95. Have fun you all~ Cheers!
PS: Please make sure you're using any iTunes version 9 and above.