As promised, Apple released an update to fix the really bad Exchange Server bug, which had an error in polling the Exchange servers, causing a huge battery drain.
Apple released iOS 6.1 recently and have been facing some issues with iPhone 4S users on 3G networks and also for the other users having their Exchange accounts synced onto their devices. The issue was a Priority 1 for Apple, and the company has promised to have fixed this issue, telling users not to worry about this bug anymore.
The update also promises to bring better battery life for all the iOS devices, which was caused by the Exchange Calendar bug. And for the Jailbreakers, the update is safe, and Apple has not fixed any loop holes in this update for the Jailbreakers.
The update is available for download via OTA. You can follow Geek Center’s guide to do a OTA update. Or you can alternatively update your device with the help of iTunes. To do that, grab a copy of the IPSW firmware from the link below: