https://devzone.nordicsemi.com/f/nordic-q-a/55678/dfu-firmware-down-loadHello I&#39;m testing a DFU right now By the way, the icons coming out when advertising in the APP today changed to the Christmas version, it seems a little weird. Originally, it was good for Advertising, Connection, and Download, But it&#39;s weird toen-USTelligent Community 13Mon, 16 Dec 2019 14:04:56 GMThttps://devzone.nordicsemi.com/thread/225679?ContentTypeID=1Mon, 16 Dec 2019 14:04:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:484c313e-6335-495b-8a10-ff88f080289bHung Bui<p>Hi Kevin,&nbsp;<br />We found a bug in the &quot;Christmas version&quot;, you can test the fix version here:&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/55653/dfu-crc-does-not-match-error">https://devzone.nordicsemi.com/f/nordic-q-a/55653/dfu-crc-does-not-match-error</a></p><div style="clear:both;"></div>