If you are one of the unlucky few who rely on an carrier-unlock for iPhone 3G and accidentally updated to iOS 4.1 upgrading your baseband (modem) to v 05.14.02 which is not unlockable, here is a method to let you upgrade your baseband to one of iPad 06.15.00 which is fortunately still vulnerable and will allow us to unlock using ultrasn0w.

In this comprehensive step-by-step illustrated guide we will walk-trough the complete process of jail-breaking and unlocking an iPhone 3G running iOS 4.1 having modem version 05.14.02.

If you have upgraded your iPhone 3G to iOS 4 you must be disappointed with the overall performance impact it caused. Now, iOS 4.2 is just around the corner, and if you are thinking whether things have improved for iPhone 3G just watch the video below for the answer.

After lots of rumors and speculations about the upcoming new model of iPhone, details about the all new Apple iPhone 3G S were finally announced at WWDC, the latest iPhone model dubbed iPhone 3G S will be made available on shelves from June 18th this year in US and in 80 countries by August, as the new letter 'S' in name signifies, the latest version will be 2x faster then the older version.

With exciting new features like faster speed, improved 3D graphics, data speeds upto 7.2 MBps, 3 MP autofocus camera, 30fps video recording, in-phone video editing, voice control, built-in digital compass, new battery, cut-copy-paste support, search, internet tethering, voice memos and Nike+ support the brand new avatar of Apple iPhone is priced at $199 for 16GB and $299 for 32GB model with contract, the current iPhone 3G 8GB variant will remain on shelves for $99.

Few days ago a new exploit allowed developers to downgrade iPhone 3G baseband from 02.30.03 to 02.28.00 running Bootloader v 5.8, the hack allowed users with iPhone Firmware 2.2.1 to get their phones unlocked via Yellowsn0w after successfully downgrading the baseband, earlier the downgrading process required users to upload files via SSH and executing it via shell, the developers have now created an easy-to-use automated GUI for downgrading the iPhone 3G Baseband automatically with minimal user interaction.

After long-wait and suspense iPhone Dev Team has finally released the only software unlock for iPhone 3G, the unlock is available via Cydia installer for iPhone and is known as yellowsn0w, the application is a small daemon without any GUI which gets launched on boot injecting the payload, here are step-by-step instructions on how to get the 3G unlock working on your device.

1. Download and install iTunes 8.02 or later from Apple website here.
2. Connect your iPhone, if you have not upgraded your iPhone to firmware 2.2 you will be asked to do so, download and install the iPhone 2.2 firmware upgrade following the on-screen instructions.

3. After updating to iPhone OS 2.2 you should be having iPhone baseband version 2.28.00, which is required to get this unlock work.
4. Download QuickPwn 2.2 and 2.2 IPSW file for Jailbreaking your iPhone 3G.