https://devzone.nordicsemi.com/f/nordic-q-a/15258/is-merging-hex-files-of-application-built-using-gcc-with-bootloader-dfu-built-using-keil-recommendedOur product is based on nrf51422_CEAA chip with softdevice S110, SDK 8.0.0, dual bank ble bootloader DFU. We have modified the dfu bootloader example from SDK 8.0.0 to have certain features and it was compiled using Keil. Bootloader example of SDKen-USTelligent Community 13Fri, 22 Jul 2016 06:07:35 GMThttps://devzone.nordicsemi.com/thread/58295?ContentTypeID=1Fri, 22 Jul 2016 06:07:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:478f4573-9f5a-4fe9-b15d-5d6ef07f6642&#216;yvind Karlsen<p>Good. Let me know if you run into any issues.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/58294?ContentTypeID=1Thu, 21 Jul 2016 13:30:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:56860b47-a2be-4ccb-9acb-6cd77b2681d3Aravinth<p>Thanks. Yes. I&#39;m using mergehex version 9.0.0 on OSX. I haven&#39;t faced any apparent issues by merging using nrf mergehex.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/58293?ContentTypeID=1Thu, 21 Jul 2016 07:21:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6542620d-1ead-4cfc-bc15-9398caa9895f&#216;yvind Karlsen<p>Hi,</p> <p>In theory this should work as long as you have a merger that supports merging intelhex16 (GCC) and intelhex32 (Keil) structure, I believe mergehex supports this, but you should test it.</p> <p>Best regards,</p> <p>Øyvind</p><div style="clear:both;"></div>