Here is the list of top 10 iPhone hackers which you can follow on Twitter to keep yourself updated with the latest news and updates on iPhone jailbreak and unlock mania. Though George Hotz (@Geohot) has left the iPhone jailbreak arena but his prestigious work for jailbreak community will never be forgotten. Thanks to these hackers who are still working for the jailbreak community and providing us with great jailbreak and unlock solutions for free.

MuscleNerd, who happens to be a member of iPhone Dev-Team, confirmed that Ultrasn0w to unlock iPhone 3GS and iPhone 3G on iOS 4.1 and iOS 4.2 will be released within a day or 2 after iOS 4.2 will be made public by Apple. For those who don't know Apple will be releasing iOS 4.2 final version in November, 2010.

If you are a newbie to the jailbreak arena or bought a new iPhone or iPod Touch and wanted to know if its jailbreakable and unlockable? Just visit http://jailbreak-me.info and enter the details of your iDevice and get the answers to your questions in less than 5 seconds.

Apple has recently released iOS 4.1. As anticipated, updating to iOS 4.1 also updates the baseband of your device to 2.10.4. However, if you update your jailbroken device to iOS 4.1 while preserving its baseband then you can easily unlock it with Ultrasn0w. If you jailbreak your iPhone 3GS(old Bootrom) with PwnageTool, it won't update the baseband and you can unlock it using Ultrasn0w 1.1-1.

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.

According to a recent tweets by Planetbeing (man behind the Android port on iPhone), jailbreak and unlock for iPhone 4 will be released together. For those who don't know Planetbeing is working with iPhone Dev Team for iPhone 4 jailbreak & unlock. Planetbeing and MuscleNerd, both have already managed to unlock their iPhone 4 through Ultrasn0w.

Previously, @planetbeing (member of iPhone Dev-Team) showed his unlocked iPhone 4 with Ultrasn0w and now another member of the team @MuscleNerd has confirmed that he has successfully unlocked his iPhone 4 with Ultrasn0w. @MuscleNerd showed a picture of his iPhone 4 camped on T-Mobile's network.

Dev-Team's quest for unlocking iPhone 4 continues. Dev-Team has posted a new article on its official blog titled ultrasn0w is growing!. The article states that they have successfully accomplished carrier unlock on iPhone 4 with Utlrasn0w tool and they are now in the process of fine tuning the tool for public release.

Upgrading your iPhone 3G, iPhone 3GS and iPhone 4 to iOS 4.0.1 will not upgrade the baseband from 05.13.04 to any newer version. But unfortunately, there is no jailbreak tool available at the moment which could jailbreak iOS 4.0.1 on iPhone 3GS and iPhone 4, so the only device you can jailbreak using Redsn0w is iPhone 3G. The following step-by-step guide will explain you how to unlock your iPhone 3G on iOS 4.0.1.

According to the recent update by Kyle Matthews, founder and owner of modmyi.com, iPhone Dev Team and Planetbeing are working hard to unlock iOS 4 on iPhone 4 whos baseband runs a completely different OS called ThreadX which is an RTOS (Real Time Operating System) unlike previous iPhone models. This new baseband OS requires complete rewrite of Ultrasn0w code to unlock iOS 4 on iPhone 4.