free unlocking and Jailbreak iPhone Firmware 3.1.2 for 3G and 3GS 3.1.2

firmware updates : blackra1n is the latest, simplest Jailbreak tool from iPhone and supports all modern iPhone and iPod touch devices running the latest 3.1.2 firmware. blacksn0w is the associated Unlock utility. (Jailbreaking lets you run software not approved by Apple, like background tasks, Google Voice apps, etc. Unlocking lets you use your iPhone on other carriers, like T-Mobile US or international carriers when traveling). blackra1n makes the process faster and easier than ever before, but if you need extra help, TiPb has your back.
Note: For those of you who are planning on jailbreaking your new iPhone 3GS with the updated bootrom, you should be aware that BlackRa1n supports only a tethered jailbreak. This simply means if you have to reset your phone or your battery runs out on you, you will need to connect your device to your computer and run BlackRa1n to be able to boot your iPhone.
Disclaimer: Neither TiPb nor I take any responsibility for any problems/issues/bricking/etc. that may occur while using this software to modify your iPhone. Please be aware of what you are doing. If you don’t understand it — don’t do it.
Lets get started, after the jump!

Preparation

First things first, before we start please be sure you are currently on the 05.11.07 baseband. If you are not, connect to iTunes and update your software to 3.1.2. Once that is done it is time to begin. You will need to go to the BlackRa1n homepage, and click on the Apple to download the proper software. You will want to save the zip file to your desktop and then double-click on it. This will then create the BlackRa1n launch icon.

The Jailbreak Process

Connect your iPhone to your computer. Once connected double-click the BlackRa1n icon to begin the process.

Now simply click “make it rain”. Your device will now enter recovery mode.

Your device will now reboot.

Once your device reboots the jailbreak process is complete and you will see the following message on your desktop.

Installing Cydia/Rock/Unlock

On your Springboard you will now see the BlackRa1n icon. Make sure you have a data connection and then press the icon to proceed.
* If you plan to unlock your device for T-Mobile USA (or any carrier not supporting iPhone 3G bands) you must first disable 3G in your settings before proceeding. *

Here you will now choose your installer. Your choices are Cydia and Rock. You can also select “sn0w” if you are unlocking your device. After you make your selections press “install”.
* Do not select “sn0w” if you are not unlocking your iPhone. *

Once complete your Springboard will reset and you will now see Cydia or Rock,
whichever you chose, on your screen.

Congratulations, you have successfully jailbroke/unlocked your iPhone. If you
wish, you can uninstall BlackRa1n from your iPhone by simply going back into the
application and pressing “uninstall”

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