https://devzone.nordicsemi.com/f/nordic-q-a/12765/nrfgo-studio-shows-please-reset-the-device-to-bootloader-modeI am trying to start programming in nrf51822 module with the waveshare kit. but the kit always shows the error as switch to boot-loader mode . how to solve this problem?en-USTelligent Community 13Thu, 31 Mar 2016 14:31:01 GMThttps://devzone.nordicsemi.com/thread/48491?ContentTypeID=1Thu, 31 Mar 2016 14:31:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a6b35c96-6324-492f-b7ea-6b041a79e8d6bjorn-spockeli<p>@gnpsriram: (GOMATHINAYAGAM) Take a look at <a href="https://devzone.nordicsemi.com/question/73472/problem-using-ulink2-to-flash-nrf51822/?answer=73807#post-id-73807">this</a> post.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/48490?ContentTypeID=1Wed, 30 Mar 2016 04:41:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d5e305bd-34c2-4029-9399-cb2ccef12986GOMATHINAYAGAM<p>i have nrf51822 waveshare kit with ulink2 debugger. Is there any solution to use ulink2 instead of segger debugger?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/48489?ContentTypeID=1Thu, 24 Mar 2016 11:17:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d9638516-86d3-423a-99cf-ee5b4750c7b3Christopher<p>In the nRFgo studio software, you should use the &quot;nRF5x Bootloader&quot; menu only if the target has a serial bootloader already programmed.</p> <p>If you want to program the nRF device for the first time, an option is to use a Segger tool and the &quot;nRF5x Programming&quot; menu. Then, you will need to flash the target with a SoftDevice and an application.</p><div style="clear:both;"></div>