Originally posted on VentureBeat:
Apple has started pushing out its latest iOS update, version 6.1.2, to fix bugs — including serious battery drain — for people hooked up to Microsoft Exchange.
To get the update, just go into your iPhone’s Settings, tap General, and then tap Software Update.
The update only says it “fixes an Exchange calendar bug that could result in increased network activity and reduced battery drain.”
Weirdly enough, the update does not fix a scary bug that makes it easy to get past any lockscreen.
That said, the update almost certainly makes it impossible to jailbreak your phone using the popular evasi0n software.
Apple with bandaid via Shutterstock