https://devzone.nordicsemi.com/f/nordic-q-a/78430/sdk-1-6-0-fota-bootloader-whit-only-one-partitionHi it&#39;s possible configure the FOTA bootloader (SMP service) whit only one partition, for large application. I using the nRF52-DK and have only 512KB of flash, and my application is more of 256K Thanks Faustoen-USTelligent Community 13Thu, 12 Aug 2021 07:19:30 GMThttps://devzone.nordicsemi.com/thread/324590?ContentTypeID=1Thu, 12 Aug 2021 07:19:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:02882dca-b447-4528-bf9f-280fe3c9c3e9Charlie<p>Search &quot;mcuboot external flash&quot;, you will find some discussion like:</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/77403/external-spi-flash-partitions-with-config_bootloader_mcuboot-y/319887#319887">external SPI flash partitions (with CONFIG_BOOTLOADER_MCUBOOT=y)</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/324551?ContentTypeID=1Wed, 11 Aug 2021 18:47:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d5a0fcbb-5282-43ca-8da7-8a517037134cFb62<p>Hi,</p> <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"><span>How do I add external memory&nbsp; and how do I configure zephyr and mcuboot to use external memory?</span></span><span class="JLqJ4b"><span> </span></span></span></p> <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"><span>Thanks in advance.</span></span></span><span> </span></p> <p><span class="VIiyi" lang="en"><span class="JLqJ4b ChMk0b"><span>Fausto</span></span></span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/324437?ContentTypeID=1Wed, 11 Aug 2021 10:53:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ca6b9e18-5b74-49ee-abe1-0a0264f0f381Charlie<p>Hi Fausto,</p> <p>Do you mean <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/0.3.0/mcuboot/design.html#image-slots">image slots</a>? Two image slots are a mandatory requirement by mcuboot. If the flash size is not enough, you have to think about other MCU(like nRF52840 with 1MB flash) or adding an external flash chip according to your needs.</p> <p>Best regards,</p> <p>Charlie</p><div style="clear:both;"></div>