iPad Pro 10.5 reboot loop

Woke up to the iPad on an apple logo roboot loop.

Apple logo for 15 seconds then black for 15 seconds then back to apple logo.

The only thing I am able to do is put it into DFU mode.

Tried updating via iTunes which looks successful but the problem continues.

Tries restoring via iTunes which looked successful but the problem continues.

The loop has now changed to apple logo, apple logo and progress bar, black.

Been on chat for over an hour while we went through all the same steps again trying a different cable.

Chat support now suggests taking it in for apple repair...

Anyone had this issue and resolved it?

I see a few older threads had similar issues.