https://devzone.nordicsemi.com/f/nordic-q-a/51350/nrf52810-ble-bootloader-sdk-15-3Hello. I want to add OTA DFU feature to my device, based on nRF52810. I already met problem with not enough space on this chip, but it was solved, so I hope it possible to add OTA DFU to my project. In SDK I found secure_bootloader_ble_s112_pca10040een-USTelligent Community 13Fri, 23 Aug 2019 14:36:39 GMThttps://devzone.nordicsemi.com/thread/205931?ContentTypeID=1Fri, 23 Aug 2019 14:36:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dd78ce7e-0105-4e82-8275-45472a50d37cArs Morozov<p>Aa, ok,&nbsp;thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/205877?ContentTypeID=1Fri, 23 Aug 2019 11:44:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:55664dad-6562-4fe0-9dd8-091bc0d46c61Vidar Berg<p>Hello,</p> <p>We allocate 32kB of flash memory to the <span>secure_bootloader_ble_s112_pca10040 (not the __debug configuration).</span>&nbsp;Maybe I&#39;m misunderstanding your question, but note that the bootloader is placed at the end of the flash, and SES simply&nbsp;displays everything the comes before as used.&nbsp;</p> <p>Build output if we removed the .reserved_* section from the flash_placment.xml to only see flash consumed by the bootloader:</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-01b8cb9904a9482286a62045990f116b/pastedimage1566560491508v1.png" alt=" " /></p><div style="clear:both;"></div>