To write one 32-bit word at a byte address inside an OTP memory region, run the following command:
nrfutil device otp-write [--force] --serial-number <serial_number> --address <address> --value <value>
Verify the command usage and remove square brackets around --force before running this example command.
Addresses outside the OTP memory range cause an error.
Tip
- You can use hexadecimal values for
<address>and<value>when convenient, for example0x00FF8100and0x0000FFFF. - To check the device serial number, run the
nrfutil device listcommand.