Fact · Dictation software
Nuance's release notes for Dragon Professional Group 15.1 list version 13 and version 14 as the versions you can upgrade from, and version 12 is not on that list.
Checked against its source on October 17, 2026
In the source's own words
“You can upgrade to Dragon Professional Group version 15.1 from the following versions: Dragon Professional Group version 13 and 14, VLA only”
Dragon Professional Group/Dragon Legal Group/Dragon Law Enforcement Release notes, version 15.1, Nuance Communications, Nuance Communications, n.d., Update/Upgrade instructions.
Open the original- What it measures
- The release notes for the volume-licensed Dragon Professional Group 15.1 give the upgrade sources in the update instructions. The same section says you can update or upgrade automatically and do not need to uninstall your existing version first.
- What it does not show
- These notes cover the volume-licensed Group edition only. They do not say what the single-user Professional edition accepts, and a version 12 owner should check with the seller or Nuance before relying on any route.