Avid iOS users can now directly update the first public beta for iOS 9 to its latest developer version (beta 4) and enjoy all the latest performance optimisations and feature enhancements over the previous builds.
Folks at iDownloadBlog have shared a simple guide to accomplish this task with ease:
Step 1: Launch Settings app and select General > Profile
Step 2: Tap on the iOS 9 Beta Software Profile
Step 3: Tap Delete Profile > select Delete
Step 4: Reboot your device
Step 5: Go to Settings > General and hit Software Update to check for the latest iOS 9 developer beta
Step 6: Tap Download and Install to begin the iOS 9 beta 4 installation
This procedure allows non-developers to legitimately upgrade their software to the latest iOS 9 developer beta iteration. It has been confirmed that the latest beta software is fully functional and without any issues.