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UPDATE : A new version of custom firmware 3.1 for iPhone 2G/3G/3GS is now available here!

Free your iPhone 3G 3.0 from Apple’s chain by jailbreaking your iPhone which provides you with various customization features and even unlock feature which Apple and your official carrier hate! There are various options available to achieve this level of customization on your iPhone such as download firmware files, bootloader files, jailbreak/unlock tools such as Redsn0w/Pwnage or QuickPwn.

If you are not the one to download all the various files and just want the ultimate result, these files are waiting for you to download! If you rather want to start from scratch, this guide is for you.

• Caution #1 : Please proceed further only if you have an iPhone 3G. For all other devices, there is an other post in the works.
• Caution #2 : Ultrasn0w (iPhone unlock s/w) is yet to be released (soon). If you are looking for iPhone 3G unlock, please hold off for a day or two. Proceed only if you have no carrier signal at the moment and want to activate and jailbreak your iPhone 3G. You may also proceed if you signed an official iPhone contract and need jalbreak stuff! Ultrasn0w is now released!
• Caution #3 : A restore is going to wipe the iPhone clean. Hence, please make a backup of all the info using iTunes and then proceed.

Step 1) Download Files (Please read the following carefully)

• Download the following files ONLY if you have an Official iPhone contract with your cell carrier (ATT and others….)

iPhone 3G 3.0 Custom Firmware Not Activated Official Carriers Part 1

iPhone 3G 3.0 Custom Firmware Not Activated Official Carriers Part 2

OR

• Download the following files ONLY if you don’t have iPhone contract (T-Mobile and others…)

iPhone 3G 3.0 Custom Firmware Activated for Other Carriers Part 1

iPhone 3G 3.0 Custom Firmware Activated for Other Carriers Part 2