I've installed iOS 9 Beta 2 on my iPhone 6 Plus - it just expired. I downloaded beta 3 but can't install it via iTunes. As soon as I cmd-click the "Restone iPhone..." button in iTunes it says. "Find My iPhone must be turned off before “My iPhone 6 Plus” can be restored."
However, I can't get into the phones settings to turn it off. If I go into iCloud.com and turn it off from there, it'll turn on as soon as it goes online.
There was an option to remotely erase my phone, through Find My iPhone on iCloud.com, which I used. The phone still said the beta had expired, but I was now able to opt-click the "Restone iPhone" button in iTunes. Scary, but the phone's not a brick at least!
Note to future self and all devs, pay heed to the popups that say you need to upgrade the beta OS version...
I followed all the steps but nothing change.
me too, i cant use my ipad2 anymore ***!
