https://devzone.nordicsemi.com/f/nordic-q-a/6670/erase-failed-flash-download-failed---flashing-softdevice-with-keil-cmsis-dapHello! I&#39;m trying to flash my SeeedStudio Tiny BLE board (nRF51822 QFAA) with SoftDevice S110 using Keil but it doesn&#39;t look like it&#39;s going to let me. I&#39;m just getting the following error: Erase Failed! Error: Flash Download Failed - &quot;Cortex-M0en-USTelligent Community 13Sat, 19 Mar 2016 22:45:37 GMThttps://devzone.nordicsemi.com/thread/23402?ContentTypeID=1Sat, 19 Mar 2016 22:45:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:079b1814-54ee-4ff1-86b4-1905e6354290kattaliraees<p>This one worked for RedBearLab BLE Nano board + CMSIS-DAP</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/23400?ContentTypeID=1Thu, 17 Sep 2015 06:53:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7f600527-58b3-4dfe-b4c7-209507de33adXtrem3<p>Martin, you saved my life! Was searching for an answer for 2 hours. Your solution finally worked, thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/23401?ContentTypeID=1Fri, 24 Apr 2015 09:01:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:61000c11-6861-492e-94fb-e7aae0869bc0MartinBL<p>Hi! I&#39;m glad you got i working. I have been asking around and think I might have found the cause to your original problem. Try the following:</p> <ol> <li>Open &quot;Target options -&gt; Debug -&gt; Settings -&gt; Flash Download&quot;.</li> <li>Remove the entry in the &quot;Programming Algorithm&quot; list.</li> <li>Click &quot;Add&quot; and add &quot;nRF51xxx External Connectivity Board&quot; instead to the list.</li> <li>Make sure &quot;Erase Full Chip&quot; is enabled in &quot;Download Function&quot;.</li> </ol><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/23399?ContentTypeID=1Thu, 23 Apr 2015 13:19:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1b055a68-1c59-48c8-8c33-df339ac7d4ecImQ009<p>Yes, though in the troubleshooting section it says that I&#39;m supposed to do something specific to that mbed kit board, something I can&#39;t really do on mine.</p> <p>Anyway, I&#39;ve got it now. Compiling using GCC and then merging the hex file with the SoftDevice (using SRecord) works just fine!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/23398?ContentTypeID=1Thu, 23 Apr 2015 12:28:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:97c2335b-5abe-4572-8fad-240a6b7627ebMartinBL<p>Have you tried the steps in <a href="https://devzone.nordicsemi.com/blogs/11/using-nrf51-sdk-with-the-nrf51822-mbed-kit/">this blog post</a>?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/23397?ContentTypeID=1Thu, 23 Apr 2015 11:07:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3eed374c-fd84-4333-9831-0ad4be9c0aebImQ009<ul> <li>No, I&#39;m not using nRFGo Studio.</li> <li>Yes, I&#39;m using the CMSIS-DAP debugger, it&#39;s the appropriate one for the board I&#39;m using, because it has a built-in CMSIS-DAP programmer.</li> <li>Yes, it has power.</li> <li>Again, using built-in CMSIS-DAP debugger</li> </ul> <p>The settings that you&#39;ve shown me match mine (with the exception of the debugger itself)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/23396?ContentTypeID=1Thu, 23 Apr 2015 10:52:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:89850edb-8f10-4544-a6df-2f4dc9500896MartinBL<p>Hi.</p> <ul> <li>How exactly are you trying to flash your SoftDevice? Are you using nrfGo Studio?</li> <li>Have you chosen correct debugger and device?</li> <li>Do you provide power to your device?</li> <li>What sort of debugger do you use and how have you wired it up?</li> </ul> <p><img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/Target-setup.png" alt="image description" /></p><div style="clear:both;"></div>