iPhone iOS 4.2 4.2.1 Jailbreak Redsn0w 0.9.6b2

APPLE 剛Release iOS4.2 (應該是4.2.1)
在網路立刻看到有人Jailbreak 了~

小道消息是說iOS4.2 針對3G用戶在iOS4使用上改善使用速度，實際上目前並不清楚！(ps.目前沒有勇氣升級！)

英文不太好就隨便看一下吧~

http://www.redmondpie.com/
作者提到可以在他的iphone4上使用，記得更新前要備份你的SHSH

Cydia on iPhone 4, running iOS 4.2.1

Supported devices are:
支援的設備：

• iPhone 4, 3GS, 3G
• iPod touch 4G / 3G / 2G

NOTE: Those of you who rely on a carrier unlock MUST STAY AWAY from iOS 4.2.1.
手機需要解鎖的請不要升級到4.2.1

Follow the step by step instructions posted below to jailbreak iOS 4.2.1 GM release with Redsn0w 0.9.6b2:
依據下列步驟進行升級與安裝

Step 1: Download iOS 4.2.1 GM & iOS 4.1 (required for Redsn0w 0.9.6b2) for your version of iOS device.
下載iPhone 手機的對應 iOS 4.2.1 and iOS 4.1(用來越獄用的！)

Step 2: Update/Restore to iOS 4.2.1 firmware using the IPSW file you just downloaded via iTunes 10.1.
在iTunes 10.1使用IPWS軟體，更新或者還原iOS 4.2.1 軟體

Step 3: Start Redsn0w 0.9.6b2 and point it to iOS 4.1 (Final Version, NOT iOS 4.2.1) to proceed with the jailbreak.
使用Redsn0w 0.9.6b2 and 檔案指向 iOS 4.1　(不是iOS 4.2.1 喔！)

Step 4: Now select “Install Cydia” and click “Next”. Optionally (if available), you can also select any other option you like.
選擇安裝 Cydia –> NEXT ,其他的你爽選就選吧！

Step 5: Now make sure your device is both OFF and PLUGGED IN to the computer before you click “Next”.
確定你的iPhone 要關機而且插在電腦上,然後才按NEXT~

接著依照畫面指示操作.

Step 6: Sit back and enjoy while redsn0w will do all the rest for you. Once done, your iPhone or iPod touch will restart automatically and you will find it jailbroken on the latest iOS 4.2.1firmware.
等待他跑完,重新開機後 ,你的設備就會更新到 iOS4.2.1了!

下載位址

Download iOS 4.1 (Final version) for iPhone 4, 3GS, 3G, iPod touch
Download iOS 4.2.1 GM for iPhone 4, 3GS, 3G, iPad, iPod touch
Download Redsn0w 0.9.6b2 for Windows and Mac
Download iTunes 10.1 for Windows or Mac

UPDATE 1: Redsn0w 0.9.6b3 for iOS 4.2.1 Jailbreak is now available for download from here.