I have just published the video on the Baofeng DM-5R compatibility before upgrading.
An upgraded version of the radio has already been released, under the model DM-5R Plus. The version in this video is the first release, which became available on September the 26th, earlier this year. This version needed to be upgraded to be able to communicate with other DMR radios. Before the upgrade, it can only communicate with other DM-5R radios only.
You can buy the upgraded version here.
Here is the video, enjoy: