Newbee with deconz/conbee3

Hi, I just receive Conbee 3, 2 days ago.t
However, It is impossible for me to add it to home assistant.
I’m also newbee with home assistant.

I installed deconz, but with it, when I plug my conbee 3, deconz want everytime to upgrade firmware.
and when I make the upgrade, deconz reonnect to conbee3, but as soon as it is conencted, deconz wants to upgrade firmware, …etc.

Do you have ay idea to upgrade the key definitively, and to be able to add the key to home assistant?