Go ahead and follow this if you have a jailbroken iPhone 3G (Firmware below 2.2.1) and don’t want to mess around with the unlocking tools for 2.2.1 firmware.
Follow the following steps for both Windows and Mac Operating systems :
1) 2.2.1 Firmware from Apple iPhone 3G updates the baseband to 2.30 disabling the software unlock.
2) Make sure you have jailbroken your iPhone 3G Firmware below 2.2.1 using QuickPwn 2.2.
3) Now,if you have access to a Mac, feel free to download Pwnage 2.2.5 and build a custom firmware. Windows users might want …

Those of you who want iPhone 3G 2.2.1 firmware with 2.28 Baseband and Cydia, download both the files below and join them using hj split.This works both on Windows and Mac. 2.2.1 may not be an important upgrade but it definitely puts and end to accidental upgrades to 2.30 baseband.

Please make sure your iPhone 3G is already pwned (you should have Cydia installed!).
Launch iTunes (Windows or Mac) and restore your iPhone to the downloaded Custom Firmware. (Hold Shift key (Windows) / Opt key (Mac) whle hitting the restore button in …

UPDATE : Custom Firmware comes to the rescue.
Apple sneaked in a worthless firmware update (2.2.1) to thwart the attempts of Dev Team to unlock the iPhone 3G via software means. Please stay away from the update till a patched firmware without the baseband update is released. I repeat, baseband cannot be downgraded and since Apple patched the baseband exploit, 2.30.03 which comes as a surprise with 2.2.1 is not unlockable by any means at this time. Save yourself some headaches and enjoy your iPhone as you are till yesterday! Any …

Now that iPhone can be unlocked to perfection till firmware v2.2, the other problem most iPhone users face is the memory issue. How many times did iPhone Safari give up on you? Not to mention those graphically rich gaming apps! Developers suggest you restart the iPhone before you use their app, well do we need to wait so long till the device boots up to full glory? No! We have an alternative, a better solution than a reboot actually! The app which lets you do that is SBSettings available on …

For a change, I published 3 videos which definitely enables a total noob to unlock his/her iPhone without much difficulty. Latest Firmware via iTunes (2.2), QuickPwn (Jailbreak) and yellowsn0w via Cydia/installer (Unlock) hold the three key steps for a successful unlock.
Before proceeding further, make sure you are equipped with the following :
1) Strictly iPhone 3G Updated to 2.2 firmware via iTunes (2G iPhones have a different process – BootNeuter from Cydia).
2) Intel Mac (10.5.6 s/w update) or Windows machine. [Mac users, make sure DFU mode is enabled (10.5.6 s.w update …

Such a wonderful feat, a blessing for all those who accidentally updated their iPhones to 2.2 (2.28 baseband). Dev Team hinted a 2.28 unlock in a screenshot released today boasting the ever popular 2.28 baseband unlock. Please STOP buying x-SIMs from China and look out for the real deal on Cydia : today (Dec 31st) at 11:59 PM EST. All the iPhones in the world released to date are unlockable via a software means and please refrain from buying software unlock from any website since Dev Team intends it to …

I am sure you will enjoy the video! A brief yet concise presentaton by the masters themselves. A very good detail but not giving it all up for Apple to take advantage. It is close to an hour’s presentation. Video is not the best of quality but that is all I got my hands on for now.

Click here to watch the video on Vimeo!

25C3: Hacking the iPhone – Pwning Apple’s Mobile Internet Device from Kiran Konathala on Vimeo.

Credit goes to volkspost @ hackint0sh (for packaging it all up) and Dev Team for initially spilling the beans (though it required some terminal hackery)! volkspost has done a remarkable job in automating the whole procedure saving the average user lot of time and terminal panic attacks!
Macbooks (both Unibody and 10.5.6 enabled Macs) have regained the precedence in iPhone hacking world (QuickPwn / Pwnage). No more switching back to a painful Bootcamp XP partition.
Before you proceed further, make sure your Mac is upgraded to 10.5.6. Quit all running applications on your Mac.
All …

Short and sweet! The software unlock software codenamed yellowsn0w is first uploaded to the iPhone and then it is run via OpenSSH on a Mac, simple huh! Even simpler is the fact that it takes less than 8 seconds from running the software to actually seeing the new carrier’s signal! This functionality will be neatly packaged into an App which will be available on Cydia this New Year’s eve. Merry Christmas everybody!

iPhone 3G Unlock (codename : yellowsn0w) is finally ready for general consumption with an anticipated release date of December 25 ~ 31 (Christmas — > New Year’s eve!). It is currently undergoing idiot proof GUI packaging for the total noobs! However, those users who accidentally upgraded to 2.2 firmware from iTunes have no other choice but to resort to x-Sim solutions or a possible baseband downgrade from 2.28 to 2.11 (hopefully).
Great job iPhone Dev Team, you really rock the iPhone world and Apple likes it too, not sure about ATT …