I have been hearing a lot from my friends that they have been facing problems with battery life in newly launched iOS 5. It seems like Apple has now fixed the issue with a recent release of new iOS 5.0.1. update. In addition to battery issues few other tweaks have also been considered in this release, bug fixes for document syncing via iCloud, the addition of multi-tasking gestures for iPad 1 and improved voice recognition for Australian users.
So just click on the “Update” button on iTunes to force it to look for a software update if it doesn’t popup the update alert automatically. Then all you need to do is follow simple steps