https://devzone.nordicsemi.com/f/nordic-q-a/25099/why-dfu-start-address-differenceHello, In the DFU sample projects provided, the IROM1 address and sizes are different? DFU debug mode: Start 0x73000 Size 0xB000 DFU NON-debug mode: Start 0x7800 Size 0x6000 Why are these different? Is is a safe assumption that theen-USTelligent Community 13Tue, 12 Sep 2017 09:30:33 GMThttps://devzone.nordicsemi.com/thread/98848?ContentTypeID=1Tue, 12 Sep 2017 09:30:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:82fef953-7184-45d1-ac0d-2a2349532c32Sigurd<p>Hi,</p> <p>The IROM1 settings for both projects are correct. Compared to the non-debug bootloader project, debug-project have the logging module enabled with logging over RTT. The size of the debug-project is therefore bigger, and requires more flash. The bootloader is already located at the top of the flash area so we can&#39;t simply increase the size of IROM1 but have to move the start address of the bootloader down to make space for it.</p><div style="clear:both;"></div>