I wonder if anyone else has seen this issue. There are a few posts that seem to point to using nrfjprog to restore the board, albeit for nRF52. But nothing I have tried allows me to program and debug my app on nRF5340DK.
I am using the application processor and even a simple program such as blinky does not seem to run as I get the timeout mentioned above. I have used different usb cables and the results are still the same.
Thanks in advance.
Best,
Habib Farahani