iPhone Dev Team has released RedsnOw 0.9.6rc15,PwnageTool 4.3.3 and UltrasnOw 1.2.3 for iPhone 4,iPhone 3G,iPad 1,iPod Touch 3G and  iPod Touch 4G.Ultrasn0w unlockers must stay away from redsn0w.Use only a custom IPSW to update to 4.3.3, to avoid updating your baseband.

iPhone Dev Team:

1. ultrasn0w unlockers must stay away from redsn0w!  Use only a custom IPSW to update to 4.3.3, to avoid updating your baseband. There are plenty of tutorials for both redsn0w and PwnageTool at sites like iClarified.com.  Or feel free to ask away in our comments section below.
2. ultrasn0w has been updated to v1.2.3 to be compatible with iOS 4.3.3 and earlier (the ultrasn0w update does not include any new baseband support!). Please reboot your iPhone using the normal “slide to power off” swipe after installing ultrasn0w 1.2.3.
3. By popular demand, redsn0w now allows you to enable multitasking gestures (although most will find it useful only on iPads).
4. iPad2 update:  The iPad2 jailbreak remains under development.  As you may know, the original exploit @comex developed in the first week of the iPad2 release was mysteriously fixed by Apple within days of its development.  Partly because of this, don’t expect much public discussion of the iPad2 jailbreak until it’s actually finished and ready for release (and please avoid asking about it).  In all liklihood, it will be a userland exploit like the first (unreleased) one, not dependent on bootrom dumps.  The first one can’t be released even for those with the original 4.3 firmware due to legal (distribution) reasons.

Supported basebands:

• 1.59.00
• 04.26.08
• 05.11.07
• 05.12.01
• 05.13.04
• 06.15.00

Download UltrasnOw 1.2.3

The UltrasnOw 1.2.3 Unlock the iPhone 4 and iPhone 3GS supports 1.59.00,04.26.08,05.11.07,05.12.01,05.13.04 and 06.15.00.So stay tunew ith us for further details to jailbreak your Device with UltrasnOw and other jailbreak tools.