This is totally new to me, but can you take one radio, copy the codeplug and upload to another radio, where the radios are operating in the digital mode simplex? In analog theory, this would work. I have been trying to program two Baofeng dm-5rs for 3 or 4 days. I can not get the radios to talk to each other. Analog fine, digital no. One can talk to a tyt 390 but the other can not with ther exact same code plug from the one that does talk to the 390. Really not sure what settings are for simplex other than I got some setting, trial and error to work.