I have had success getting the DV4mini working on the Pi2 B by doing the following items.
1. The below link give you very good instructions for downloading and putting the image on an SD card. I found the DVmini application would work to a point but was still not fully functional. On to step two.
2. Next, from the Pi2 browser go to the link described by Stef, DL1BH:
http://dv4m.ham-dmr.ch/Testversionen/
i hope this is, what you are looking for,
Stef., DL 1 BH-developmet team DMRplus and DV4mini-
i hope this is, what you are looking for,
Stef., DL 1 BH-developmet team DMRplus and DV4mini-
At the bottom of the page there are links…. In the Linux/ARM section download both the DV4mini.exe and DV-serial to the Pi download folder. While you are there you can also download (from the Firmware folder) the 1.64 firmware to the Pi root download folder.
For non linux people things get a little strange here. What you need to do now is move the two existing dv4mini.exe and dv-serial that are in the DEV4mini folder to the Archive folder. Assuming you are working direct on the Pi and not via a VNC connection….. If you go to the Files on the Pi2 and attempt to move the two files I found that I did not have permission to move them.