iCloud Restore Backup on iOS9 beta 2

Have you contacted Apple Support? Don't tell them that your on a beta, and see if they can help. I am pretty sure that they can look at the iCloud backups and see if they are corrupted. They cannot however decrypt them. They can check the manifest to ensure the backup is not corrupted. However, this might just be a bug.

Ya i'm having the same exact isue. I've tried restoring my iPad mini 3 and iPad air 2 with their own backups and tried even using my iPhone 6 Plus backup to see if that worked and it doesn't.

I am having the exact same issue !! I've been going on about this all day and I can't seem to find a solution. All this started in the morning when I saw that ios 9 public beta 2 was available, so natuarally I immediately started to dowload the version. After it was done downloading i began to install it, once it was installed my phone was stuck on a "slide to upgrade" screen and when I slide the screen an apple logo appeares with a progression bar under it; it'd get to about 20 percent then go back to the "slide to upgrade" screen. Frustarted, I pushed the lock and home button at the same time and still got the same thing. Eventually I just reset and restored the phone. Now it was running on ios 8.4 and i restored it from an old ios 8.4 back up. Then i proceeded to upgrading back to ios 9 and ios 9 public beta 2 was successfully installed BUT i wanted to restore it from an ios 9 public beta 1 backup. I restored the phone and my backup was there and ready to go except when I selected the back up from icloud, it began to load to about 10 percent then a "cannot restore from backup" icon appeared, i have been trying to do it over and over again but the same thing keeps popping up. My only possible solution is to downgrade to ios 9 public beta 1 BUT i dont think thats possible...... if anyone has a solution to this PLEASE respond to the forum. I'm stuck using my old iphone untill i can figure out how to restore it from that ios 9 public beta 1 backup.