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Problem using usb dfu trigger on nrf52840 dongle with nRF Connect

I try to incorporate the usb dfu trigger into my application. However when using nrf Connect for Desktop to flash the nrf52840 dongle it can not reopen the dongle.

This could be a bug in my application, therefore I tried with the ble_connectivity example from the SDK for test purpose. Since the usb dfu trigger is used in this example, I expected no problems.

However I still get the same Error in nRF Connect. I tested with both connecting the dongle through a hub and directly to the computer.

Just to clarify, there is no problem flashing the device, but I have to use the reset button to enter the bootloader.

PS: My Setup: Windows 10, SDK v15.3.0,  nRF Connect for Desktop v3.2.0, nRF52840 Dongle

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