“iPhone 16 pro”

I upgraded to El Capitan on an extra Macbook I have and it hasn't booted up once, it keeps restarting about 80% into the load process. Has anyone else seen this or know of a fix? I might restore from my backup.

It's been stuck at about 3/4 of the way there for the last 20 minutes. I got a message that iMessage was added to the watch across my iPhone & Mac, and in the Apple Watch app it says its on software 2.0.What should I do? I really dont feel like making this thing brickand bringing it to the Apple Store.

Have installed on rMBP mid 2014 installation was smooth and pretty stable for a beta. However It is picking up my home network and connects to it but no internet connection. Other devices including iOS devices are connecting and using the internet connection without issue. Have also tried connecting to iPhone and iPad personal hotspots and internet still does not work. I have run first aid and reset the Pram but none of these have helped.Anyone else having the same issue.

I need to adapt to different ios version of the application of, but my iphone is the latest version. How to lower version?

From the iOS 9 Beta Software Installation Guide:System RequirementsiOS 9 beta supports iPhone 4s or later, iPod touch (5th gen), and iPad 2 or later. iOS 9 beta should be installed using the latest released version of iTunes ...Only iPad 2 or later? Really?Then how did I just install it on a first gen iPad mini?