https://devzone.nordicsemi.com/f/nordic-q-a/26264/ask-how-to-process-the-thingy521、I have down load the thingy FW 2.1.0 which has three projects 2、I BUILD the 《pca20020_s132》，It is ok 3、and press the down load button in the keil 4、It shows download success ,but when I connect the device ,It shows onlyone service (DFU),noten-USTelligent Community 13Wed, 25 Oct 2017 11:49:45 GMThttps://devzone.nordicsemi.com/thread/103390?ContentTypeID=1Wed, 25 Oct 2017 11:49:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6ecefe4f-9b5e-4f04-bddb-b5a7fe3ec152Bj&#248;rn Kvaale<p>Can you go to the Configuration panel and scroll all the way to the bottom. There, it says firmware version. Does it say 2.1.0 for you?</p><div style="clear:both;"></div>