On a Custom-PCB the OTP is in its default state. This means e.g. that the "Production Ready" flag is not set an that the DA14683 goes through it's boot sequence and configures various pins as outputs. This could potentially damage some devices, especially because the DA14683 can be used to power other components which may not yet fully running (e.g. until 1V8 is configured properly).
But more important: I assume this could also damage the DA14683 itself? What is the recommended procedure from Dialog?
Keep the DA14683 in reset and hoping that a debugger is fast enough to connect before the boot sequence starts? Or is the boot sequence fast enough that this will not lead to an issue, even if a pin may (indirectly) be connected to GND?