https://devzone.nordicsemi.com/f/nordic-q-a/96082/programmer-in-nrf-connect-3-11-does-not-have-any-write-optionHi, When I open &quot;Programmer v3.0.4&quot; in nRF connect 3.11 and select my &quot;zephyr.hex&quot; file to flash to the nRF52940dongle, the &quot;Write&quot; button does not being activated. So, i cant flash my build in my dongle. What should I do except updating the &quot;nRF Connecten-USTelligent Community 13Tue, 31 Jan 2023 08:29:17 GMThttps://devzone.nordicsemi.com/thread/407229?ContentTypeID=1Tue, 31 Jan 2023 08:29:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0d2eb891-8b41-428a-aa92-a65b3a7c1911BehicMV<p>My build configuration does not match with my device. That was the reason.&nbsp;</p> <p>Thank you&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/406866?ContentTypeID=1Fri, 27 Jan 2023 13:57:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1f28a97a-a144-48a2-ac84-c6110e725dc3Einar Thorsrud<p>Hi,</p> <p>What is the address range of the hex file you are attempting to write? When you are building a nRF Connect SDK project for the nRF52840 dongle, you need to build for nrf52840dongle_nrf52840, and in that case the start address will be at 0x1000. That is because the dongle has an MBR in the first page, and this cannot be overwritten. If the hex file you added has data in the first page (and that is not an MBR, which is just stripped out), it will not be valid and the &quot;Write&quot; button will be grayed out.</p><div style="clear:both;"></div>