
This works on ANY Windows version eg. XP SP3, Vista 32 and 64bit (Basic/Home/Business/Ultimate) and 7 32 and 64 (Starter/Home/Professional/Ultimate)
My system
Pentium M 715 @ 1.5GHz
1024MB DDR2 4200
Windows 7 Ultimate 32bit
What you will need
1. iTunes 9.0.2
2. Firmware 3.1.2
3. blackra1n RC3 (Click Here to Download)
4. Windows XP SP3/Vista 32 or 64/7 32 or 64
1. Before you start your jailbreaking venture, make sure you have an updated version of iTunes. The latest version is 9.0.2, go here to download.
2. Once you have iTunes upgraded or installed (9.0.2) go ahead and sync your iPhone and do a backup to save all your contacts, messages and other data. This however will not save any music or videos, you will need to sync those manually after the upgrade/jailbreak.
note: when you first plug your phone, iTunes will ask you if you want to update, click cancel for now.
3. Use the shift+restore method to select your firmware and restore the phone.
4. After the restore is complete, CANCEL the "setting up as new iphone" step, and CLOSE iTunes.
5. Open up blackra1n, and click "make it ra1n", your iPhone will automatically boot into DFU mode and the jailbreak should take at least 30-60. It is that simple

6. After the jailbreak is complete, you will NOT see Cydia anywhere on the phone, you will need to download it through the blackra1n app.
For 3G users you will get 3 options; Cydia, Icy/Rock, blacksn0w
For 2G and iPod users you only get two options either Cydia or ICY/Rock
Install ONE at a time and reboot/restart after install.
blacksn0w does not require a reboot, but you are welcomed to do so.

ATTENTION 2G users, to unlock your phone, go to Cydia and search for BOOTNEUTER, there is only one bootneuter in cydia, and that is the one you will need to download and install.
After bootneuter is installed, RESTART the phone. When the phone is done restarting, run boot neuter and use the following settings below.

After that is all set, tap the "flash" button on the upper right corner. Be PATIENT and do not interrupt the flashing otherwise you will bricked you phone and have to restore all over.
3G Users, just run the blackra1n app again and install blacksn0w to unlock your phone, thats it.
7.Now you can run iTunes and restore your phone from backup.
Good luck and enjoy your jailbroken 3.1.2 iPhone!
*as a reminder, if you have paid for any kind of jailbreak or unlock, DEMAND A REFUND!*





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