I use stm32f series mcus with stm32cubeMx and Keil uvision5 demo in user board.
Also I have USB OTG connections and I use Dfuse program for upgrade my firmwares.
But I suddenly detect to I can upload dfu format of my stm32f firmware via Dfuse program. So I upgrade any another empty stm32f development kit or user boards. This process looks like a hex file sharing.
I would like to close my code for upload operations. This is very important for security.
How Can I Close Dfuse Upload Operation?
PS: I did not share codes. Because All codes and firmwares give same results; led blink, led applications or complex codes it does not matter.