All the answers that kinch wants is here yet he creates a new thread asking the same question.
If you can't find the answers to a question you asked in a thread I don't know if you will actually find the version number of the buzz app. It's the same thing as finding stuff on your android phone.
Go to settings, apps, locate the buzz app
FYI: on my remote I think the three line button might have been replaced with the word "menu"
and to find the version number I have to go to settings/more/apps/system apps/buzz tv2/and a screen pops up with option to force stop/uninstall and that is where a icon with buzz tv2 has the version number. Also the clear cache, data, and uninstall options.
If I right click or left click the buzz app in the home menu/apps it starts live tv