iOS 6.1 beta 4 now available to developers

Apple has just released iOS 6.1 beta 4 to developers. If you already have the iOS 6.1 beta installed, launch Settings, tap General, tap Software Update, and update in-place and over-the-air (OTA). If not, or if you prefer to be traditional about it, you can download the firmware from developer.apple.com and load the whole thing over USB.