iPod Touch Gen 5 Serious Battery Drain after Upgrading to ios 8.4
I've spoken to several people who are having trouble with iPhone and iPod 5's battery drain after upgrading to IOS 8.3 and 8.4. Apple support has kindly done some trouble shooting with me on this for free. But, we haven't been able to solve the problem, and the nearest 'genius' is very far away. Has anyone been able to solve this problem? Or, is it possible to go back to 8.2?
The battery drains about 25% overnight with everything turned off: Airplane mode on, iCloud off, app refresh off, all apps off, all notifications off, everything completely shut down/powered off. This is an improvement after I did a backup and restore. Prior to that, the battery was draining completely in 12 hours.
Before I upgraded, I could let my iPod sit turned off for several days with no problem. It's acting like I have something running, but I don't, and the battery usage doesn't indicate that there's anything unusual running.
A battery test by Apple with my iPod plugged in to my computer indicated no problem. But, they were not able to get the test to work without the iPod plugged in. They want me to take it it an Apple Genius, but there are none near here. Hoping someone else has found a solution or can tell me how to back up to 8.2.
iPod touch (5th generation), iOS 8.4