I just tried upgrading today. Dunno if its been mentioned, but some users may still be having issues with upgrading to iOS13.x (any version)
After upgrading 'press Home to upgrade" appears on the device, except it doesn't work... You press the Home button, and nothing..
Following this:
I did a full restore via iTunes which fixed it.. I don't have a backup, so i dunno if that works as well.
After upgrading 'press Home to upgrade" appears on the device, except it doesn't work... You press the Home button, and nothing..
Following this:

Fix “Press Home to Upgrade” Issue on iPhone in iOS 15
When upgrading to new iOS, iPhone stuck on press home to upgrade screen? What does press home to upgrade mean? Follow this guide to get answers and methods to fix it easily.
www.imobie.com
I did a full restore via iTunes which fixed it.. I don't have a backup, so i dunno if that works as well.