Apple Releases iOS 4.3.4 For iPhone, iPad, iPod Touch & iOS 4.2.9 For Verizon iPhone To Fix JailbreakMe 3.0 Vulnerability [Updated]

BY Jason

Published 15 Jul 2011

iOS 4.3.4

Apple has just released iOS 4.3.4 for iPhone, iPad and iPod Touch and iOS 4.2.9 for Verizon iPhone to fix the vulnerability that was used by Comex in JailbreakMe 3.0.

Comex had released JailbreakMe 3.0 – one of the easiest solutions to jailbreak iPhone, iPad and iPod Touch early last week, which uses a userland exploit to jailbreak and install Cydia on an iOS device using mobile Safari.

Security experts had raised concerns that the vulnerability in iOS could be exploited in a similar way by malicious websites to install malware. Apple had acknowledged the issue earlier in the week and announced that it will release a patch to fix the vulnerability shortly.

According to the release notes, iOS 4.3.4 and iOS 4.2.9 includes the following changes:

Fixes security vulnerability associated with viewing malicious PDF files.

iOS 4.3.4 supports the following iOS devices:

  • iPhone 4, iPhone 3GS
  • iPod Touch 4G, iPod Touch 3G
  • iPad 2, iPad 1

iOS 4.2.9 supports:

  • Verizon iPhone 4

Comex expected Apple to release an iOS software update (iOS 4.3.4) to fix the vulnerability used in JailbreakMe 3.0 and has advised users to take a backup of SHSH blobs. You can use TinyUmbrella for iOS 4.3.3 or iOS 4.2.8 to take a backup of your SHSH blobs so that you can downgrade to the older version of iOS if required. Jailbreakers and iPhone unlockers should also avoid upgrading to iOS 4.3.4 if it is released, until the jailbreak community does not release the latest tools for iOS 4.3.4.

If you don’t want to upgrade to iOS 4.3.4, but don’t want to be exposed to the security vulnerability then you can install PDF Patcher 2 on Cydia to fix the vulnerability associated with viewing malicious PDF files. You can checkout the instructions to install it in this post.

If you don’t care about jailbreaking or unlocking your iPhone then you can update your iPhone with iOS 4.3.4 or iOS 4.2.9 via iTunes.

Update 1:

According to Knowledge base articles (for iOS 4.3.4 and iOS 4.2.9), Apple has fixed three vulnerabilities in the latest iOS software updates.

Update 2:

Here are the direct download links for iOS 4.3.4 and iOS 4.2.9:

Update 3:

MuscleNerd of the iPhone Dev team has also issued the following warning to jailbreakers and iPhone unlockers:

iOS 4.3.4 is out…please don’t update, or you’ll lose your jailbreak! And back up your 4.3.3 blobs soon!

As always, let us know how it goes and if you notice anything interesting in the comments.