https://devzone.nordicsemi.com/f/nordic-q-a/74881/dual-bank-dfu-in-nrf52832Hi Nordic, I have successfully Implemented a single bank DFU [button less dfu] with my customize service but I don&#39;t know how to enable a dual bank DFU in my services. Please let me know what kind of changes I have to make for that. Thanks inen-USTelligent Community 13Fri, 07 May 2021 19:38:29 GMThttps://devzone.nordicsemi.com/thread/308809?ContentTypeID=1Fri, 07 May 2021 19:38:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d72240c3-f4a7-4708-b916-afeccec0ea04Dipak<p>Hi</p> <p>I have taken one test,</p> <p>I have uploaded my customize code with DFUservice in NRF52840 using sdk_17.0.2.</p> <p>then after I have uploaded BLINKY code but during the zip transfer, I disconnect the hardware, and</p> <p>then after my hardware advertise as a DfuTarg and then I just simply restart the hardware, and again it advertises his name,</p> <p>as it advertises before :)</p> <p></p> <p>Thank you so&nbsp;much Ivan Herrera!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/308785?ContentTypeID=1Fri, 07 May 2021 15:17:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c5590590-b8e0-4cbf-9307-c38bdd6814a0Ivan Herrera<p>The bootloader will determine if it needs to use a dual-bank or single-bank update. If there&#39;s enough flash available for a dual-bank, it will do a dual-bank update. Otherwise it will revert to single-bank.&nbsp;</p> <p>More info on this here:</p> <p><a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/lib_bootloader_dfu_banks.html">infocenter.nordicsemi.com/.../lib_bootloader_dfu_banks.html</a></p><div style="clear:both;"></div>