Hello,

what must I do for Update the Version and use piwik?

Greetings
Micha

Piwik provides some code you should be able to add to any theme page of the theme used independent of the Zenphoto version.

If you refer to this plugin that just adds that code via a filter it should work with 1.4.3.x.
http://www.zenphoto.org/news/piwik