https://devzone.nordicsemi.com/f/nordic-q-a/5222/s120-stack-re-writing-itselfOur application uses the S120 stack, and a bootloader. We want the bootloader to be able to update both our application software and the S120 stack (preserving the MBR). We create a single binary image from the S120 and application hex files, usingen-USTelligent Community 13Sat, 07 Feb 2015 13:36:57 GMThttps://devzone.nordicsemi.com/thread/18298?ContentTypeID=1Sat, 07 Feb 2015 13:36:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7e1d17c3-19f0-486a-bdd2-12802e8036f7Hung Bui<p>Hi Michael,</p> <p>Yes, address 0xC00 is belong to the MBR and the MBR does use that page of the flash to store configuration data and will erase them when needed.</p> <p>You can try to use mergehex.exe and hex2bin.exe tool to combine hex file and convert it to binary. As far as I can see, it will leave the gap as 0xFFFF.</p><div style="clear:both;"></div>