Apple this afternoon released iOS 5 beta 5 to developers. The over the air delta update, a feature which first appeared in the fourth beta, checks in at 128 MB. Notably, to enable this OTA update, users must first perform a hard reset of their device.
To install iOS 5 beta 5 using over the air software update, you must first erase all content and settings on your device by choosing Settings > General > Reset > Erase All Content and Settings. Over the air software update can be initiated on devices running iOS 5 beta 3 and later by choosing Settings > General > Software Update.
The fifth beta of iOS 5 doesn’t contain any major new features, but nonetheless contains a litany of small updates, additions, fixes, and a smattering of other changes. BGR has an extensive iOS 5 beta 5 change log that’s worth poring over if, you know, you’re into that kind of thing. Not surprisingly, the area with the most attention in this beta is iCloud.