https://devzone.nordicsemi.com/f/nordic-q-a/121577/best-way-to-flash-softdevice-to-seeed-xiao-nrf52840-plusHello! I want to develop a Heartrate Monitor Device which uses BLE and ANT+ using the Seeed XIAO nRF52840 Plus Board. Now that I have the board I found out that ANT doesn&#39;t Work without flashing the Softdevice S340 to it. I have tried some outdateden-USTelligent Community 13Mon, 19 May 2025 08:53:53 GMThttps://devzone.nordicsemi.com/thread/535931?ContentTypeID=1Mon, 19 May 2025 08:53:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c0d7da21-53da-48ae-b284-052cd5aa313bSusheel Nuguru[quote user=""]Now that I have the board I found out that ANT doesn&#39;t Work without flashing the Softdevice S340 to it[/quote] <p>S340 is ANT softdevice, so yes ANT won&#39;t work on nRF52 devices without flashing S340 on it. This is normal and as expected and as designed. I am not sure if this will work on Seeed aswell but if it has same memory layput as nRF52832 and nRF52840, then it should work.</p> [quote user=""]So what is the Best / easiest Way to get the Softdevice updated on the Seeed Board?[/quote] <p>You need to contact Seeed forums for it. My best guess is that you can update it using a debugger connected to SWD pins and using external debugger. But it is best you get this info from the Seeed websites and forums.</p><div style="clear:both;"></div>