Apple has recently released the latest iOS 4.3.5 for iPhone, iPod Touch and iPad. The latest iOS 4.3.5 IPSW files can be downloaded from the direct links at the very end of this post. Going back a few weeks ago, Apple has introduce patch for the JailbreakMe 3.0 PDF exploit which resulted in the release of iOS 4.3.4. The latest iOS 4.3.5 update is also related to patching up a security issue.
According to the changelog, all users of iPad, iPod Touch and iPhone are recommended to upgrade their iDevice as soon as possible. With that being said, if you are planning to still have a jailbroken device, you should stay from this update for a while.
Download iOS 4.3.5 for iPhone, iPod Touch and iPad
You can download the official iOS 4.3.5 IPSW files from the given links below: