I have the 9 beta and there are just an insane amount of bugs its not even usable. I tried restoring through iTunes to my old 8.3 or 8.4 backup and it says I dont have enough storage space. I have 20GB on my iPhone and 10GB on iCloud...Anyone know how to fix this and revert back?
From the iOS beta Software Installation Guide, available on the download page:
NOTE: Devices updated to iOS beta may not be restored to earlier versions of iOS. Registered development devices will be able to upgrade to future beta releases and the final iOS software.
(emphasis added)
you can downgrade to 8.3 but you have to start a fresh as your restoring from a backup from a later build than 8.3
if you have a backup prior to iOS 9 you can use that backup
If you have been updated an iPhone, maybe you can restore to a previous version, but, probably you got lot of errors, because firmware update also updates some drivers (For example, modem version), and, the downgrade doesn't change it.
If your device are for development (Teorically you should not update a production device), wait for beta2. If not, probably you have a problem.
This rversion is not supported by Apple. The only way you can carry it out is if you a complete copy of the full iOS 8.x .ipsw and you are able to Restore to it via iTunes. You may then have issues restoring from any backups you took under iOS 9, as some else pointed out
Just to be clear, because I'm new to ios betas. I do a full iTunes backup of my iPad 2 WiFi, then instal ios9, I SHOULD be able to restore back to that ios 8.3 no problem? Because it sounds like that's what the OP is trying to do essentialy, and it's failing.
That blurb in the notes usually goes for OS X as well, but at least with OS X we can clone/restore back completely from backup with out issue. I might wait for B 2 regardless, but i'ts still nice to know what i'm getting into.
Review my last reply. A computer is different. Teorically, you can downgrade if you go to DFU mode and restore with an old IPSW. But, the problem are on some cases, modem version doesn't work with the old firmware, and you got a big brick, or at least, a very expensive iPod touch.
If you have a full backup from an iOS 8.x installation, and if you have a full copy of the iOS 8.x firmware full, you will be able to restore using the full firmware, then use the backup. If you do not have the full iOS 8.x backup, you'll have to restore as a new iphone/ipad
Not sure what you mean by full copy of the 8.x firmware. How can I tell? I just have whatever iTunes created at backup.
You would only have the iOS 8.3 firmware if you had previously downloaded it from the Apple developer site, possibly as part of earlier beta testing of iOS 8.3.
The purpose of beta testing is to beta test the operating system. The purpose of a phone on which a beta version of iOS has been installed is not to be a phone: it is to test the beta version of iOS.
For instance, if your phone ceases to be able to make calls after a beta version of iOS has been installed, that is a success for the beta testing programme, which has found a bug which you will report to Apple so that they can fix it.