Are UICR OTP registers eraseable with nrfjprog's --sectoranduicrerase?

Hello,

The documentation for the nRF5340 says that the UICR OTP registers can only be written to a non-0xFFFF value a single time:
> Can only be written to a non 0xFFFF value once.

I am wondering if this OTP can be reset to factory default via nrfjprog, or if it is truly OTP and cannot be reset at all once it is written. The nrfjprog manual: https://infocenter.nordicsemi.com/pdf/nRF5x_Command_Line_Tools_v1.0.pdf does not specify.

Thanks,

Nick

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