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Can nRF Toolbox allow app triggered OTA DFU?

I saw the example of Andriod nRF Master Control/Connect app triggering the FOTA for mbed platform without using any button. Unfortunately, I don't have Andriod device and the IOS nRF Connect doesn't perform FOTA. I used nRF Toolbox DFU instead. I can only perform OTA using this nRF Toolbox when I press reset button to get into the bootloader mode. I am not able to do an app triggered buttonless OTA using nRF Toolbox. The FOTA DFUService for mbed seems very seamless. I didn't have to specify DFUService dfu(ble); in the code and the DFU service is advertised together with another BLE service. (Just to prove I am not in the reset cycle bootloader DFU service). Since I built an mbed app using "App for FOTA" selection without any further code, did I miss something in the code to be able to handle callback into bootloader? I am using Redbearlab BLE Nano. Does nRF Toolbox support app trigger buttonless FOTA? Or it only support a reset button OTA bootloader only?

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