The Boy Genius newswire says that iOS 4.3.1 will contain a number of bug fixes, including a patch for a flaw that allowed hackers to jailbreak the iPad 2.
As reported earlier this month by Computer Weekly, the iPhone 3G is also vulnerable to attacks after the latest software patch, iOS 4.3, failed to update the defences of the device.
Graham Cluley, senior technology consultant at Sophos, said that, whilst the update is compatible with the iPhone 3GS and later models, such as the third-generation iPod Touch and the iPad, it lacks security patches for older models, such as the iPhone 3G and iPod Touch.
Commenting on the Boy Genius newswire's assertions, Apple Insider notes that iOS 4.3 will include baseband updates for the iPhone 3GS and original iPad with 3G.
"It will also reportedly fix an issue with the iOS Springboard and third-party applications not recognizing the gyroscope on the iPad 2", says the newswire, adding that the update will also address a problem that would cause memory corruption when reading large files from USIM filesystem.
"Boy Genius Report has, in the past, correctly pinpointed the release of iOS updates through its sources at wireless carriers. Earlier this month, the site did correctly indicate that iOS 4.3 would see an early release, though it was incorrectly off by one day in its "exclusive" report", adds the newswire.
iOS 4.3 was released just two weeks ago and includes a native WiFi hotspot feature, as well as improved Javascript code execution.