As usual a note for jailbreakers and unlockers who want to update their iPhone 4, iPhone 3GS/3G or any other idevice to iOS 4.2. Though the latest Redsnow 0.9.6 b2 can jailbreak iOS 4.2 on all idevices, but it is highly recommended not to update the iPhone until/unless the final version of iOS and a better jailbreak tool is released.
And those who rely on unlock, they must never try this release because there is no unlock tool available for iOS 4.2. Here is an update from iPhone Dev Team:
Today Apple released to developers the GM seed for 4.2. Tinkerers will find that yesterday’s redsn0w jailbreaks today’s 4.2 GM seed, simply by pointing redsn0w at the 4.1 IPSW (rather than the 4.2 one). Right now it mostly only makes sense for JB app developers to do that because many apps (including Cydia itself) need to be updated for 4.2. However, if all you want to do is enable afc2 (to use iFunBox or other file browsers), or to tweak settings like Battery % and Homescreen wallpapers, then go for it (if you have valid paid access to the GM seed). Be sure to uncheck the Cydia box, though! Ultrasn0w unlockers should stay very far away from this!!
Here are download links for iTunes 10.1 Beta 2 and iOS 4.2 GM Release:
iTunes 10.1 Beta 2, Mac OS X – 68.05MB
iTunes 10.1 Beta 2, Windows x86 – 70.9MB
iTunes 10.1 Beta 2, Windows x64 – 71.81MB
iOS 4.2 GM (IPAD) – 549MB
iOS 4.2 GM (IPHONE 4) – 624.27MB
iOS 4.2 GM (IPHONE 3GS) – 401.3MB
iOS 4.2 GM (IPHONE 3G) – 322.88MB
iOS 4.2 GM (IPOD TOUCH 4G) – 608.65MB
iOS 4.2 GM (IPOD TOUCH 3G) – 389.21MB
iOS 4.2 GM (IPOD TOUCH 2G) – 346.74MB