Won't let me perform a software update
My Apple iPod 5th generation ran of battery, so I charge it a couple of days later. Then as I started charging it a little while ago, I noticed that my iPod had the wrong date. It was set to December 31, but with the correct time. I've already been to settings then to Date and Time. As I checked the Time Zone, it just kept loading. I Googled "how to change the date and time on a iPod". It said that the version of iOS on your device has to be up to date, which I have't downloaded yet. As I hit "Download and Install", it says "An error occurred downloading iOS 8.3". What should I do now?