dtr620 have two computers that can not communicate, it is to be different band
Hello and welcome!
I don’t have any firmware for the DTR620 specifically. I have no idea if the DTR650 firmware would work with the 620.
If they’re like the 650, there are no different “bands”, just channels.
Have you tried a factory reset?
[ol]
[li]Turn the radio on[/li]nr[li]Hold the Home key and press the PTT button three times[/li]nr[li]Release all keys[/li]nr[li]Press the Down, Up and Right Soft keys sequentially[/li]nr[li]Hold the Home key and press the PTT button three times again.[/li]nr[li]You should see the radio restart[/li][/ol]
Congratulations Andy by topic
I’m coming in forum
I’ll try something
Joao Owls