https://devzone.nordicsemi.com/f/nordic-q-a/4842/about-options-of-nrfjprog-exe-programHi, I hope use nrfjprog.exe to do following things: HW: nrf1822 download s110 6.0 download bootloader download firmware write some values to certain addresses use write/read protection to bootloader area and firmware area. en-USTelligent Community 13Tue, 16 Dec 2014 13:55:07 GMThttps://devzone.nordicsemi.com/thread/17108?ContentTypeID=1Tue, 16 Dec 2014 13:55:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:37a3b8a2-1e26-446d-9bfc-155293c2a757Stefan Birnir Sverrisson<p>Hi</p> <p>Perhaps <a href="https://devzone.nordicsemi.com/question/22056/combining-sd-dfu-and-application-hex-and-programming/?answer=22246#post-id-22246">this thread</a> can help you with how to upload SD+bootloader+application with nrfjprog.</p> <p>In order to write specific adresses it is a question of adding to the merged .hex file for the addresses the you want to write. For this to work, you need to study the <a href="http://en.wikipedia.org/wiki/Intel_HEX">intelhex format</a> a bit which is the .hex format. In fact, the purpose of merging the app_valid_setting_apply.hex file with the other files is to write specific address in the bootloader settings area, in order to make the bootloader accept the application. I guess you can do something similar for the addresses you want to write.</p> <p>In order for the memory protection mechanism to be activated, you need to reset the device.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/17107?ContentTypeID=1Tue, 16 Dec 2014 04:40:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f2d424ad-fd35-4b32-9c00-6a3ce9d52bd5irarykim<p>I found how to download bootloader. I should use &quot;program &lt;hex_file&gt;&quot; command.</p><div style="clear:both;"></div>