Nrf51822, arduino IDE Hex, uploading nrfgohttps://devzone.nordicsemi.com/f/nordic-q-a/20942/nrf51822-arduino-ide-hex-uploading-nrfgoHi everyone on the community. I&#39;ve been struggling trying to upload the hex file created by arduino using redbear nrf arduino fork on a NRF51822 -v2 board that is being sold at ebay. the hex file size is around 30kb, while the s130 softdevice onen-USTelligent Community 13Thu, 30 Mar 2017 13:14:06 GMTRE: Nrf51822, arduino IDE Hex, uploading nrfgohttps://devzone.nordicsemi.com/thread/81825?ContentTypeID=1Thu, 30 Mar 2017 13:14:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3c81ea8b-7aa0-4eee-b7b1-30afa7cd4e5cHung Bui<p>I would suggest you to also post your question on RedBearlab forum.</p> <p>You can have a look <a href="https://github.com/RedBearLab/nRF51822-Arduino/blob/S130/docs/DFU_User_Guider.md">here</a> for DFU documentation. I&#39;m not sure if your bootloader is the same as that one.</p> <p>If you already flash the bootloader, you may need to use the bootloader to flash your application , not nRFGo Studio. If you don&#39;t flash the bootloader, then you can simply flash the softdevice then flash the application using nRFGoStudio.</p><div style="clear:both;"></div>