The best way to upgrade depends on what kind of installation you have:
- If you already have a
org.openhab.binding.harmonyhub-2.1.0-SNAPSHOT.jarin your/addonsdirectory you can simply replace that one. - When you have a OH 2.1.0-SNAPSHOT installation and use the online repository, uninstalling and reinstalling the Harmony Binding should upgrade it.
After updating, the command:
bundle:list|grep Harmony
should show a version from April 24th or newer, e.g. 2.1.0.201704251551 when using the online repository. Versions prior to April 24th will have one of the known issues listed above.