https://devzone.nordicsemi.com/f/nordic-q-a/113872/program-custom-board-id-in-rom-in-nrf5240-with-nrf-sdk-16-0-0Hi, There is one board level hardware change in our new board design that requires different GPIO behavior. Is there a way to program board revision number in ROM (not cleaned by DFU process), so it can be retrieved in the firmware and used to controlen-USTelligent Community 13Tue, 13 Aug 2024 08:03:28 GMThttps://devzone.nordicsemi.com/thread/497954?ContentTypeID=1Tue, 13 Aug 2024 08:03:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b7644f2-c11e-4ba1-9013-324d6e969e8bVidar Berg<p>Hi,</p> <p>The &#39;CUSTOMER&#39; range in the <a href="https://docs.nordicsemi.com/bundle/ps_nrf52840/page/uicr.html">UICR</a> (User Information Configuration Registers) consists of non-volatile registers that are suitable for storing one-time configurations, such as board revisions and serial numbers.</p> <p>Example&nbsp;for writing to a UICR.CUSTOMER register with the debugger:</p> <p><pre class="ui-code" data-mode="text"># Set UICR.CUSTOMER[0] register nrfjprog --memwr 0x10001080 --val 0x12345</pre></p> <p>Code to read the register from the application code:</p> <p><pre class="ui-code" data-mode="c_cpp">uint32_t board_rev = NRF_UICR-&gt;CUSTOMER[0]</pre></p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>