No, i don't have because i can't downgrade the RC pro 2 firmware. Forum member Suren have it working, see several messages up for this. I just copy that messages.
I have tested it with the latest fw on RC2 and that worked well, even with the Mavic 4.
At the moment:
Dongle V2 4G ONLY works with Mavic 4 Pro in the next ways:
Drone:
Mavic 4 pro needs to be on 0000 firmware, 0100 needs to be downgraded to 0000 (fabric version)
RCs:
It works when:
RC 2 with current firmware
RC Pro 2 only with...