https://devzone.nordicsemi.com/f/nordic-q-a/44324/fw-version-failure-dfu-otaHi, I create my application image using nrfutil like this : Everything was working great so far but for test purpose I added one argument to this line : I flashed my custom board with the nRF Toolbox app without issue, but now if I wanten-USTelligent Community 13Mon, 04 Mar 2019 13:28:38 GMThttps://devzone.nordicsemi.com/thread/174003?ContentTypeID=1Mon, 04 Mar 2019 13:28:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:525f0f9c-7bdf-499b-b002-854d1bc876bbVidar Berg<p>Hi,&nbsp;</p> <p>The DFU verification logic in SDK 15.0.0 prohibits FW downgrades, so to &quot;recover&quot; the device you either need to wipe the settings page as you said, or change the verification mechanism&nbsp;to accept version downgrades.&nbsp; SDK 15.3.0 has a configuration option in sdk_config.h to disable downgrade prevention.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/173838?ContentTypeID=1Sun, 03 Mar 2019 16:36:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9e23a2bd-a339-4c65-bccd-25956014c29bStephaneJ<p>I have wipe my board and completely reset BOOTLOADER and SOFTDEVICE then reuploaded an app image to reset the previous behavior.</p> <p>But I&#39;m still curious to know if there is a better solution.</p><div style="clear:both;"></div>