Hello dblhusky,
Welcome to Apple Support Communities!
We understand from your question that you want to restore back to a previous backup to get your files back. We can certainly help you with this!
This will only work as long as you have not backed up your device since the update. This article will be a good resource for you. It will walk you through the necessary steps to resolve the question.
Restore your iPhone, iPad, or iPod touch from a backup
We hope this is able to resolve your issue. If you have any more questions or this does not resolve your issue, please reach back out on the thread!
Cheers.