Home > iphonehacks > PwnageTool 4.2: Untethered Jailbreak For iPhone, iPad, iPod Touch & Apple TV 2G Released; Fixes iBooks Problem

PwnageTool 4.2: Untethered Jailbreak For iPhone, iPad, iPod Touch & Apple TV 2G Released; Fixes iBooks Problem

February 15th, 2011 02:36 admin Leave a comment Go to comments

Jailbreak iOS 4 on iPhone 3GS

iPhone Dev team have just released PwnageTool 4.2 for iOS 4.2.1 that incorporates the untether exploit used by Chronic Dev Team in greenpois0n that was released few days back.

PwnageTool 4.2 will allow iPhone users to safely restore to a pre-jailbroken iOS 4.2.1 firmware and retain their current baseband so that they can use Ultrasn0w to unlock their GSM iPhone. PwnageTool 4.2 also includes fixes for iBooks issue that we had reported earlier and Wi-Fi problem on Apple TV 2G.

Dev Team has provided the following details in a blog post:

What’s in a name?  Well in the case of an HFS volume name on iOS, an untether exploit — as the Chronic Dev Team revealed last week with an untether for the 4.2.1 jailbreak, which had previously been a tethered JB for most recent devices since 4.2.1’s release in November.  With their permission, we’ve incorporated their 4.2.1 “feedface†untether into today’s PwnageTool 4.2.  This means iPhone unlockers can safely restore to a custom 4.2.1 pre-jailbroken IPSW and retain their current baseband and unlock [..]

[..] PwnageTool also includes two very recent improvements to the 4.2.1 JB:  iBooks was just fixed by @comex and @pushfix last night so that it works as intended on DRMed books, and the wifi problem on AppleTV 2G was fixed by @nitotv, @DHowett, and @saurik.  Both of these fixes will also be available in upcoming Cydia package updates, so if you’re already jailbroken you can wait for those updates rather than restore and jailbreak again.

The various components to the 4.2.1 untether (including a second exploit involving Mach-o headers) were worked out by 0naj, posixninja, and pod2g, and a nice writeup by 0naj is available on the wiki. The actual injection method uses geohot’s limerain exploit for most devices.

PwnageTool 4.2 supports the following iOS devices for iOS 4.2.1:

Source: PwnageTool 4.2: Untethered Jailbreak For iPhone, iPad, iPod Touch & Apple TV 2G Released; Fixes iBooks Problem

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