Redsn0w v0.9.6b3 has been released to jailbreak iOS 4.2.1 GM on Windows and Mac OS X. Please note that this Redsn0w update is only for for developers so that they might get their jailbreak-apps ready for iOS 4.2.1. Moreover the current public release of Cydia and MobileSubstrate is not compatible with iOS 4.2.1 GM but with OpenSSH and OpenSSL SSH bundle, you will be able to install packages without Cydia by using the tethered boot...

Flash (aka Frash for iPhone) was ported to jailbroken iPhone, iPod Touch & iPad quite a while ago, but it involved a lengthy installation procedure. Here is a quick and easy method to install Frash on your iDevices with a Cydia repository.

A new iPhone hacker named Johnny Franks (@0xjohnny) just released PwnageTool bundle to jailbreak iOS 4.2.1 GM on iPad (Wifi+3G) model. For those who don't know, Apple released iOS 4.2.1 GM to fix issues related to Exchange and the audio devices. You can use this bundle to patch PwnageTool 4.1.2 which then can be used to jailbreak iOS 4.2.1 on iPad using the procedure below.

iOS 4.2 comes with a unique feature called AirPrint which allows you to print your documents, photos, emails and web-pages over a Wifi connection with your Apple iOS device. To enable iOS 4.2 AirPrint feature on Windows, follow the step-by-step guide below. This guide is applicable to Windows 7, Windows Vista and Windows XP users.

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.

Apple has just released iOS 4.2.1 GM seed (Build: 8C148) for iPhone 4/3GS/3G, iPod Touch 4G/3G/2G & iPad (Wifi+3G) to developers only. Apple rolled out an updated version of iOS 4.2 GM seed last week as well. This is however a completely new firmware update identified as iOS 4.2.1 by Apple.

Google hasn't released official Google Talk app for iPhone, iPod Touch and iPad yet. While Google Talk app for iDevices is still under development, Google has released the web-based mobile version of Google Talk optimized for Safari browser to use GT on iDevices.

Once you have jailbreaked iOS 4.2 on your iPhone, iPod Touch or iPad, you must install AppSync OS 4.2 to install cracked apps on your device. AppSync 4.2 will help you to sync all cracked apps on your device with iTunes by patching the MobileInstallation file on your device otherwise iTunes will automatically delete all cracked apps from your device whenever you will sync it with your computer.

RecBoot has been updated to v1.3 with an improved, clean and user friendly UI. Just like previous versions, you can use RecBoot to put your iPhone, iPod Touch & iPad into and out of recovery mode with a single-click. So its pretty useful for those who have broken "Home" or "Power" button and they need to downgrade their iDevice firmware.

iH8sn0w has just released his much awaited Sn0wbreeze tool to jailbreak iOS 4.1 on iPhone 4/3GS/3G, iPod Touch 4G/3G/2G, Apple TV 2G and iPad iOS 3.2.2 on Windows. This step-by-step guide will explain you how you can use Sn0wbreeze 2.1 to create custom IPSW of iOS 4.1/3.2.2 so that you can jailbreak your iDevice without upgrading its baseband version.