Apple has just released iOS 4.3.4, making good on a promise to patch a vulnerability that has been used for the latest JailbreakMe.com jailbreaking method but which could also allow malicious downloads to infect users’ devices. The update is available for the iPhone 4/3GS, third- and fourth-generation iPod touch, and all iPads. A special iOS 4.2.9 update is also available for the CDMA iPhone 4.
The iOS 4.3.4 update comes in as Build 8K2, while the iOS 4.2.9 registers as Build 8E501.
iOS 4.3.4 Software Update
Fixes security vulnerability associated with viewing malicious PDF files.