https://devzone.nordicsemi.com/f/nordic-q-a/16022/merge-uicr-with-hexHi, just want to make sure: is it possible to merge UICR values into hex so that I can load some values there during production in a single flashing stage? thanks best regardsen-USTelligent Community 13Tue, 30 Aug 2016 07:41:18 GMThttps://devzone.nordicsemi.com/thread/61097?ContentTypeID=1Tue, 30 Aug 2016 07:41:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c6ec00fa-0475-4478-8209-864a8dcd26b3Einar Thorsrud<p>The UICR registers at cannot be erased without completely erasing the chip (using a debugger), but once erased, you write to it in exactly the same way as any other part of the flash.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/61098?ContentTypeID=1Sun, 28 Aug 2016 12:17:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a1669f4a-fba6-42f6-b6e5-f64195167654Christopher<p>The <code>mergehex</code> tool is provided by Nordic. You can use it to merge two hex files. You will find many posts about it, for instance <a href="https://devzone.nordicsemi.com/question/1462/nrf51822-how-to-merge-software-device-and-application-code-to-one-hex-file/?answer=1604#post-id-1604">this one</a>. The <code>mergehex</code> program is part of the nRF5x Command Line Tools. You can <a href="https://www.nordicsemi.com/eng/nordic/Products/nRF51822/nRF5x-Command-Line-Tools-Win32/33444">download it from here</a>. It is available for Windows, Linux and Mac OS X.</p> <p>You can also use many other &quot;generic&quot; software, like <a href="http://srecord.sourceforge.net/">SRecord</a> for instance.</p><div style="clear:both;"></div>