I am using the Windows version of nRF Connect v2.3.2. Aborting the DFU process does not work in the following use case:
- Connect to a nRF52832 advertising as DFU (for example the secure bootloader ble example)
- Press the "Start Secure DFU" symbol
- Select a zip file with the software
- Now the important step: Let the bootloader time out.
- Press the Start DFU button
Now it is impossible to end the process without actually closing the whole nRF Connect window (sometimes I need to terminate the process in Task Manager)