So i just downgraded from iOS 15.1 to iOS 15.0.1, I erased the iPhone and when i restored the iPhone I restored from a iCloud backup, It was giving me to select the option to restore from a beta backup and I choose to restore it from the backup that i make before installing the beta I chose that one but when i go to icloud backup It is teling me “The last backup could not be completed because iCloud contains a backup from a newer iOS version. iCloud Backup will occur later when connected to power. locked, and on a Wi-Fi or mobile data network. And i was nervous I deleted the network settings! Please help me!
The last backup could not be completed
So i just figured it out. You need to turn off and delete all iCloud backups, make an iCloud backup then it will not display that.