Geohot is one of the most popular guy in the iPhone/iPod Touch jailbreak/unlock scene. He has successfully managed to hack the PlayStation 3 as well. However, Geohot has been mum right from the time the Apple iPhone 4 was announced, and released.

iOS 4 Jailbreak: There is now a jailbreak available for iPod Touch 3G running iOS 4 on new bootroom and iPhone 3GS running iOS 4 on new bootrom.

iPhone 4 was released on June 24 and a jailbreak for iPhone 4 did not take much time. iPhone 4 jailbreak was done by the person who also developed the Spirit jailbreak for iPhone 3.1.3. The iPhone 4 jailbreak is Userland Jailbreak for iOS 4 on iPhone 4.

Looks like it did not take much time for the iPhone 4 to be jailbroken and the guy behind the Spirit jailbreak for iPhone 3.1.3 has successfully been able to run a Userland Jailbreak for iOS 4 on iPhone 4.

Disabling Mutlitasking and Background Wallpaper Support in iOS 4 is not possible, learn how you can disable multitasking and background wallpaper in iPhone running iOS 4.

Jailbreak and Unlock for iPhone 4 running iOS 4 might take a while for developers to come up with. Right now iPhone 3GS and iPod Touch 3G do not have jailbreaks for iOS 4 too.

Fix iBooks issues after jailbreaking iOS 4 on iPhone 3G or iPhone 2G with redsn0w. Download redsn0w 0.9.5b5-4 and run it to fix iBooks issue after iPhone jailbreak.

Jailbreak iOS 4: Jailbreak iPhone 3G running iOS4 or iPod Touch 2G running iOS4 with the new redsn0w update which can jailbreak iOS 4.0 devices.

Jailbreak iOS 4 on iPhone 3G and iPod Touch 2G with Redsn0w 0.9.5 Beta 3. iPhone hactivate, jailbreak and unlock with using Redsn0w.

iPhone 3G users will be able to enable multitasking, wallpaper support and battery percentage for iOS 4 using redsn0w and sn0wbreeze iPhone jailbreaking tools.

iOS4 jailbreak for iPhone 3GS, iPhone 3G and iPod Touch will be released shortly.

Ultrasn0w has been updated to version 0.9.3 and will allow you to unlock your iPhone running iOS4 with baseband between 04.26.08 thru 05.13.04.

Redsn0w which is currently the only option to jailbreak iPhone using iOS4 for iPhone 3GS, iPhone 3G and iPod 2G has been updated to add new features which includes a Verbose Kernel boot and ability to display battery percentages.

Do no upgrade to iTunes 9.2 if you are using the Spirit jailbreaking tool, however, if you are using redsn0w or PwnageTool to jailbreak the iPhone you can safely upgrade to iTunes 9.2.

Jailbreak for iOS4 on iPhone 3GS is now available. The PwangeTool Bundle for iOS4 GM will allow users to jailbreak iPhone 3GS with Apple’s latest renamed iPhone OS 4, which will also run on iPhone 4.