Apple has released iOS 4.3.4 to patch the PDF exploit. This update also patches JailbreakMe 3.0. If you rely on a jailbreak, don't update to 4.3.4. If you are concerned about the PDF exploit, download PDF patcher from Cydia.
Source: http://www.iclarified.com/entry/index.php?enid=16080
Update: Apple has released iOS 4.3.5 which is a minor security patch. Again, If you rely on a jailbreak, don't upgrade.
Source: http://techcrunch.com/2011/07/25/whats-new-ios-4-3-5/
Source: http://www.iclarified.com/entry/index.php?enid=16080
Update: Apple has released iOS 4.3.5 which is a minor security patch. Again, If you rely on a jailbreak, don't upgrade.
Source: http://techcrunch.com/2011/07/25/whats-new-ios-4-3-5/