Try running an update with the phone in recovery mode. To put a phone into recovery mode connect it to the computer first and then hold power + volume down until you get the iTunes recovery logo, ignore the screen going off and on and the apple logo appearing keep holding until you see the iTunes logo.
Then you’ll want to open iTunes if it doesn’t open by itself and choose the update option. This will force an update on the phone and hopefully it’ll say iPhone is disabled try again in 1 hour. If it does hopefully you’ll be able to get the files off the phone.