https://devzone.nordicsemi.com/f/nordic-q-a/11516/nrfgo-how-when-to-verify-the-hex-fileHi, I&#39;m using v1.21 nRFgo. As programming 51series , (1)I want to know if the program check the hex file before the log dialog shows &quot;programmed successful&quot;? (2)And what kind of method nRFgo apply to check the Integrity of flashing? (3)I&#39;veen-USTelligent Community 13Mon, 25 Jan 2016 08:24:37 GMThttps://devzone.nordicsemi.com/thread/43542?ContentTypeID=1Mon, 25 Jan 2016 08:24:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6a068c15-6769-46c4-9fc1-6f939f93a300bjorn-spockeli<p>1.nRFGo Studio is just a GUI on top of the commandline tool nRFjprog, which has a verify option</p> <pre><code>nrfjprog --program &lt;name-of-hex-file&gt;.hex --verify </code></pre> <p>which is used when you press program in nRFGO Studio</p> <p>2.With the verify option set, nrfjprog will flash the hex file to your device, then read-back the same flash area and compare it with the original hex-file.</p> <p>3.No, with read-back protection enabled it is no longer possible to read-back the firmware and verify that it has been flashed correctly.</p><div style="clear:both;"></div>