https://devzone.nordicsemi.com/f/nordic-q-a/125045/is-there-a-differential-update-method-in-ncs-sdkHI Based on the nRF54L15 with SDK 3.0.0 and MCUBOOT for OTA updates, I&#39;ve discovered there&#39;s a firmware image compression algorithm available. However, when compiling with the BLE protocol stack, the complete firmware is about 300KB in size, and evenen-USTelligent Community 13Fri, 24 Oct 2025 07:43:41 GMThttps://devzone.nordicsemi.com/thread/552323?ContentTypeID=1Fri, 24 Oct 2025 07:43:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:27f73e1e-bcea-46eb-8ee9-1406ae461799longrain<p>Here is an example,but not official:<a href="https://github.com/Noy0908/delta_dfu_lib">github.com/.../delta_dfu_lib</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/552069?ContentTypeID=1Tue, 21 Oct 2025 12:48:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:170ed4a5-b056-4427-910f-8e5fb43f6474SwRa<p>Hello,</p> <p><span>Unfortunately, there is&nbsp;</span>no support for differential (delta) OTA updates for application firmware<span>&nbsp;on Nordic MCUs using nRF Connect SDK and MCUboot.</span></p> <p><span>Regards,</span></p> <p><span>Swathy</span></p><div style="clear:both;"></div>