https://devzone.nordicsemi.com/f/nordic-q-a/60279/uart-update-nrf52-s-firmware-by-mtk7628-python3-7-masterHi, I am using nRF52 to complement BLE function of MTK7628(they communicate through UART),I&#39;ve implemented most of the functions.Now I want to add OTA to nRF52, so I use uart bootloader (nRF5_SDK_15.3.0_59ac345/examples/dfu/secure_bootloader/pca10040_uarten-USTelligent Community 13Fri, 17 Apr 2020 11:45:38 GMThttps://devzone.nordicsemi.com/thread/245217?ContentTypeID=1Fri, 17 Apr 2020 11:45:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3d4db1bc-249a-40a3-8e64-62071f2e827fbjorn-spockeli<p>Hi Harry,&nbsp;</p> <p>our pc-nrfutil supports both serial and OTA DFU, see&nbsp;<a href="https://github.com/NordicSemiconductor/pc-nrfutil">https://github.com/NordicSemiconductor/pc-nrfutil</a>&nbsp;for the source code.&nbsp;</p> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>