Read and Write UICR with nrfutil on nRF5340

Hello,

I tried to read and write the OTP region in UICR of nRF5340 with nrfutil, but got the following output:

$ nrfutil.exe device x-write --address 0x00FF8100 --value 0x11aabbcc --core Application
x Failed to write data to 48315XXXX, [jlink] Memory write is not implemented for this device
Error: One or more memory write tasks failed:
 * 48315XXXX: [jlink] Memory write is not implemented for this device, code: NotSupported
 


$ nrfutil.exe device x-read --address 0x00FF8100 --core Application
Error: Failed to memrd read one or more devices:
 * 48315XXXX: [jlink] Memory read is not implemented for this device, code: NotSupported

Any Ideas, what could be the issue here? Does nrfutil not support reading uicr from different cores right now? Had no problems doing this with nrfjprog.

Thanks a lot!

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