As promised, iPhone Dev Team has released their much awaited version of Ultrasn0w (v1.0-1) which can unlock iPhone 4 running iOS 4.0 / 4.0.1 with 01.59.00 baseband and iPhone 3G, 3GS with 04.26.08, 05.11.07, 05.12.01 or 05.13.04 baseband version. Once you have jailbreaked your iPhone by using JailbreakMe, you can follow the step-by-step procedure below to unlock your iPhone 4, 3GS, 3G.

Apple has just released iOS 4.1 Beta 3 (build 8B5097D) and iOS SDK 4.1 Beta 3 (build 10M2308) for developers. This is probably the last beta release of iOS 4.1 before Apple will seed iOS 4.1 final version to all iPhone 4, 3GS, 3G and iPod Touch 2G, 3G users. If you have a registered Apple Developer Account, you can download iOS 4.1 Beta 3 and SDK by singing into iPhone Dev Center.

If you have jailbreaked iOS 4.0 or iOS 4.0.1 on your iPhone or iPod Touch then you might need to patch MobileInstallation file on your device which then allows you to install cracked apps on your device without iTunes. To patch the MobileInstallation file, you need AppSync which you can easily install on your jailbroken iDevice using the step-by-step guide below.

Here is a complete step-by-step guide to jailbreak iOS 4.0 and iOS 4.0.1 on iPhone 4, 3G, 3GS (Old+New bootrom) and iPod Touch 1G, 2G (MC, non-MC), 3G with JailbreakMe v2.0. For those who don't know, Comex has just released his browser-based untethered jailbreak for all iDevices running iOS 4.0, iOS 4.0.1 and iPad iOS 3.2.1. As told earlier if you are on iOS 4.1 (Beta-1 or Beta-2) then you might not able to jailbreak...

Comex has just released his much awaited userland jailbreak and its called "JailbreakMe (Star)". With JailbreakMe, you can jailbreak iOS 4.0 / 4.0.1 and iPad iOS 3.2.1 on all iDevices including iPhone 4, 3GS (Old+New bootrom), iPod Touch 1G, 2G (MC, non-MC), 3G and iPad (Wifi+3G models). However those who have updated to iOS 4.1 (beta-1 or beta-2) cannot jailbreak their device with JailbreakMe v2.0

The following guide will allow iPhone 3G, iPhone 3GS and iPod Touch 2G (MC & non-MC), 3G users to downgrade their device firmware from iOS 4.1 beta 1 to iPhone OS 3.1.3 or iPhone OS 3.1.2. The same guide can be used to downgrade these devices from iOS 4.0 / 4.0.1 to iPhone OS 3.1.3 / 3.1.2. Unlike iOS 4.1 to 4.0 / 4.0.1 downgrade, iPhone 3G and iPod Touch 2G (non-MC) users don't require...

Yup its true! Updating your iPhone to iOS 4.1 beta 2 (Jailbreakable) will upgrade its baseband to 05.14.01 which cannot be unlocked using Ultrasn0w 0.93. Apple patched the exploit which enabled Ultrasn0w 0.93 to unlock iPhone 3G, 3GS running iOS 4.0 / iOS 4.0.1 with baseband 04.26.08, 05.11.07, 05.12.01 and 05.13.04.

Last time, just before the release of Comex's Spirit jailbreak, FSM published some leaked screenshots of Spirit jailbreak which were later declared fake by Comex and Chpwn. The same happened this time as someone published leaked screenshots of upcoming next Spirit like jailbreak tool by Comex. According to the leaked screenshots the next jailbreak tool by Comex will be called Sedna.

You can jailbreak iOS 4.1 Beta 2 on iPhone 3G and iPod Touch 2G (non-MC models) with Redsn0w 0.9.5b5-5. However you might not able to unlock your device with Ultrasn0w 0.93 as iOS 4.1 Beta 2 comes up with the baseband upgradation which is yet to be unlocked by iPhone Dev Team. If you have an already unlocked iPhone 3G, then stay away from this update.

Apple has released iOS 4.1 Beta 2 (build 8B5091b) and SDK (build 10m2305a) for iPhone 4, iPhone 3GS, iPhone 3G and iPod Touch 2G, 3G. Just like iOS 4.1 beta 1, this build of iOS is available for developers only, so if you have a registered Apple Developer account, you can download the update by signing into iPhone Dev Center.