iOS 4 was released earlier today and the iPhone Dev Team was quick enough to release an ultrasn0w unlock for it. Thanks to the unlock, and the recently released redsn0w 0.9.5 beta 5, you can install, jailbreak and unlock iOS 4 on your iPhone 3G. Make sure you follow the instructions correctly.

1. Download iOS 4 for your iPhone 3G. Place it on your desktop for easy access.
2. Download redsn0w 0.9.5b5-4 [links at the end]. It’s available for both Mac and Windows.
3. Download and install iTunes 9.2
4. Now connect your iPhone 3G to your computer and using iTunes, upgrade to iOS 4. Do this the official way as described here.
5. Now that you have iOS 4 final build on your iPhone 3G, you’ll have to jailbreak it by using the iOS 4 with redsn0w 0.9.5 Beta 5. Click browse and point it to iOS 4 firmware and follow the instructions on screen. Remember to enable battery percentage, wallpapers and multitasking. 
6. [Vista users might needto run redsn0w as administrator]
7. Once you’re done and the iPhone reboots, you should have a jailbroken iPhone 3G.
8. Now go to Cydia and add the following repo http://repo666.ultrasn0w.com. Check here for how to do this. Search for ultrasn0w 0.9.3 and install it and reboot again. Your iPhone 3G is now carrier unlocked. Also remember to add this repo to Cydia http://apt.saurik.com/cydia-3.7.

Download redsn0w 0.9.5b5-4

• Mac OSX (x86)
• Windows

To fix and enable Push Notifications on your hacktivated/unlocked iPhone, follow this guide.

UPDATE: the guide has been updated to reflect the recent release of redsn0w 0.9.5 beta 5-4 which fixes the iBooks issue that users were reporting.

If you face any issues, don’t hesitate to ask us in the comments. We’ll be glad to help!

Download Your Firmware From : www.felixbruns.de Download Redsn0w: bit.ly Download Blackra1n: bit.ly Watch Part 1 here www.youtube.com If you cannot understand the procedure in video then fallow this one : Jailbreak iphone 3GS using purplera1n: 1. Make sure you have installed the latest version of itunes. bit.ly 2. Download purplera1n. bit.ly 3. Plug in your iphone to your computer. Make sure itunes is closed. 4. Run purplera1n and click Make it Ra1n. You should get a message saying that your iphone is waiting for reboot. Your iphone will then reboot in recovery mode and you should see the image above on your iphone screen. If you dont see this image after a few minutes, then it probably failed and you have to repeat the process 5. After a few minutes, your iphone will reboot and you will have a new icon on your springboard: Freeze. 6. Launch the Freeze app and install Cydia from there. 7. Once Cydia is installed, close Freeze and reboot your iphone. 8. Launch Cydia and do a complete update. 9. Should you want to get rid of the Freeze icon, install cydelete from Cydia, and delete the Freeze icon as you would delete an App Store app (hold until the icons wiggle and delete it). 10. Should you want to unlock your iphone 3GS, simply install ultrasn0w from Cydia. Thats it. Pretty simple!!!. *IGNORE* How To Downgrade iphone Baseband 05.12.01 to 04.26.08 Downgrade Iphone3g Iphone 3g baseband 5.12.01 5.11.07 4.26.08 Ultrasnow Ultrasn0w Blacksnow Blacksn0w 3gs 2g Ipod Touch Itunes …