DFU

[harrys]

hi 

i am working on nrf52dk. my dfu code is working first time . second time when i try to update code with android app. it gets stuck on starting bootloader.

[Vidar Berg]

Hi,

Sounds like you are missing the buttonless DFU service in your application. Please see my answer here for more details: https://devzone.nordicsemi.com/f/nordic-q-a/78046/nrf52840-usb-dongle-programmer-to-perform-ota-dfu