iOS 10.3.1 update, "error deleting record" after iCloud sign-in step
This was all performed while connected to my MBP through iTunes, downloaded through iTunes, and run through iTunes for my iPad2 mini Retina....
Update was successful (mostly) but the iPad goes into a loop that you cannot break out of if you follow the prompts. So, once the update is complete the iOS asks you to input your iCloud credentials and then attempts to update the login. However, after spinning for a couple minutes a popup dialog box "Error deleting record" is displayed. At which point you have only "OK" as a choice which then brings you right back to inputing credentials to login / update iCloud information....which, well you get the idea, now you are stuck in a loop.
The only "fix" I can determine is to break the sign-in by selecting "skip this step" at the bottom of the iCloud login screen.
While this seems to work and brought me to my home page on the iPad, I don't really know what caused it to fail within the update. I have gone to the iCloud settings and all my info appears to be correct (and working); so I think this is may just be a glitch in the iOS 10.3.1 installation process and possibly only on iPad2 (my iPhone 7 worked just fine).
iPad mini 2 Wi-Fi, iOS 10.3.1, null