https://devzone.nordicsemi.com/f/nordic-q-a/29669/how-to-recover-nrf52-on-ruuvi-tag-after-programming-with-softdevice-and-bootloaderHello World, I checked the Developers Zone, but I have not found the direct example of my problem. I use the RuuviTag board with NRF52832_XXAA. I use it as a development board, connected over SWD to JLink, v6.2x I am at the novice level. en-USTelligent Community 13Tue, 23 Jan 2018 14:56:17 GMThttps://devzone.nordicsemi.com/thread/117782?ContentTypeID=1Tue, 23 Jan 2018 14:56:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a6d405bb-46a7-43c7-8b28-8d8dfbc86be5Bj&#248;rn Kvaale<p>Hi Marcin, maybe <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/development/nrf52_dev_kit/hw_debug_out.html?cp=2_1_4_5_9">this link will help</a>. Normally, to program an external nrf52 you just connect your external nrf52 with a SWD cable to the debug out port on the nrf52dk &amp; then the interface MCU will tell the DK to program the external chip instead of the nrf52 chip on the DK. Have you talked to the ruuvitag tech support? They have this <a href="https://lab.ruuvi.com/troubleshoot/">troubleshooting page</a>, in addition to <a href="https://f.ruuvi.com/">their forum here</a>. I do not have any experience with the ruuvitag beacon, so I believe it would be best for you to ask there first.</p><div style="clear:both;"></div>