CAUTION : iOS 4 jailbreak is way complicated unlike other jailbreaks. Please proceed with caution.
Requirements :

Jailbroken iPhone 3GS with older bootrom.
You haven’t used Spirit jailbreak before (for untethered jailbreak).
You have Windows (PC). For Mac, try Pwnage instead.
Please read the above requirements again.

More info about these custom firmware files :

[UPDATE] : You need to download files from either step 1a or 1b depending on your baseband preference. Both are unlockable, so I would go with step 1b which is the latest baseband which supposedly does better with the battery. step 1b …

Apple’s iPhone had little or no updates to the UI ever since its inception (2007 June). The homescreen is way too boring when compared to the ever so popular Android phones. To add some life to the existing iPhone homescreen, install a free application called ‘Element’. It is a Cydget widget. You no longer have to launch each individual app (weather, email, sms, calendar,.. updates). Following are the steps to install it on your iPod Touch / iphone.

Your iPhone should be jailbroken before proceeding.
Launch Cydia and search for ‘Element’ and …

CAUTION CAUTION CAUTION CAUTION : Please leave a comment if you don’t know what you are doing. Better safe than sorry. You are warned, now proceed!
iPhone 2G, 3G, 3GS users can now safely update to 3.1.3 firmware without updating the baseband (for unlock). 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, download Pwnage 3.1.5 tool for Mac.

Caution #1 : A restore is going to wipe the …

iPhone 2G, 3G, 3GS users can now safely update to 3.1.2 firmware without updating the baseband (for unlock). 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, download Pwnage 3.1.4 tool for Mac.

Caution #1 : A restore is going to wipe the iPhone clean. Hence, please backup your iPhone using iTunes and then proceed.

More info about these custom firmware files :

Has factory boot logos …

Within few days of Geohot’s Blackra1n, a much more elegant jailbreaking solution for the iPhone and iPod Touch is now released – Pwnage 3.1.4 for Mac (Download it here). This time around, users don’t have to fiddle around with DFU mode like they did with the last iteration of this tool.
All you have to do is create the custom firmware and Option-Restore (Mac) / Shift-Restore (Windows) the custom firmware in iTunes!
Those of you who want the custom firmware, download them here!

UPDATE : iPhone 3GS has a different security feature which disables it from using any other firmware rather than the latest available. So, if you still need Unlock and Jailbreak, custom firmware (look in categories) is the only option we have. The following article is not recommended anymore. Thank you.
Geohot rules yet again! He was the one to have unlocked the iPhone first generation phone back in 2007 and now, he is back with more! This time it is iPhone 3GS that is unlocked and jailbroken by the hacking maestro …

Apple gifted all iPhone 3GS owners with an exploit so that we can jailbreak and unlock our iPhone 3GS to our heart’s content. But here is the catch! The exploits WILL be closed in the next firmware upgrade which is due any minute now.
So here is the thing : PLEASE DO NOT UPGRADE TO iPHONE 3.1 before performing the following procedure (if you want to unlock/jailbreak that is!). Dev Team is waiting for the next release (iPhone 3.1) so that the Apple will not close the jailbreak exploit. Jailbreak for …

Redsn0w is a revolutionary way to jailbreak, activate, unlock an array of Apple’s devices based on iPhone 3.0 firmware. Devices like iPhone 2G, iPhone 3G, iPhone 3GS, iPod Touch 1G/2G can easily be jailbroken, activated and unlocked (iPhone 2G – Automatic, iPhone 3G – Manually via Cydia & Ultrasn0w).
If you don’t want to go through the following steps and you just want the real deal, follow this guide rather wherein you can download the custom firmware file which should do the job for you!
The tool itself is so neatly packaged …

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, …

Apple released iTunes 8.2 just in time for a probable iPhone 3.0 release at WWDC ’09. While iTunes 8.2 adds support for iPhone 3.0 goodness, it strips iPhone off of all the Jailbreak excitement! If you upgrade to the latest version of iTunes, you will no longer be able to Jailbreak the iPhone nor use SSH over USB. Apple changed some protocols in MobileDevice framework which resulted in panic-mode amongst the jailbreak community! The added security implemented some serious checks on the device hardware/software (security epoch, chipid, security domain, production …