Conbee 2 not recognized in HA (RP 4)

Hi,
Just got my conbee 2 USB and I’m not able to get this working in HA.

On a clean install the log states:
21-12-24 03:59:21 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.ADD hardware /dev/bus/usb/001/059 - None
21-12-24 03:59:21 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.ADD hardware /dev/ttyACM0 - /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2468190-if00
21-12-24 03:59:23 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.REMOVE hardware /dev/ttyACM0 - /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2468190-if00
21-12-24 03:59:23 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.REMOVE hardware /dev/bus/usb/001/059 - None
21-12-24 03:59:34 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.ADD hardware /dev/bus/usb/001/060 - None
21-12-24 03:59:34 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.ADD hardware /dev/ttyACM0 - /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2468190-if00
21-12-24 03:59:35 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.REMOVE hardware /dev/ttyACM0 - /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2468190-if00
21-12-24 03:59:35 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.REMOVE hardware /dev/bus/usb/001/060 - None
21-12-24 03:59:46 INFO (MainThread) [supervisor.hardware.monitor] Detecting HardwareAction.ADD hardware /dev/bus/usb/001/061 - None

when selecting the device in deCONZ I get the following error message:

Failed to save add-on configuration, Device ‘/dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2468190-if00’ does not exist in deCONZ (core_deconz). Got {‘device’: ‘/dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2468190-if00’}

Any support would be greatly appreciated

How are you running it?

Perhaps you need to flash the firmware again.

What do you mean by " running it" ?
Raspberry PI4
USB extension cable.

PS. how do I flash the firmware (sorry for being a noob)

The OS

Here you can find it.