HI,
Thanks for your thread!
At this moment, the Russian version is available. you can check it here:
https://www.tzportfolio.com/download/languages.html
You also can help us to continue translating language files that haven't been translated yet. Then we will evaluate the result and release the new version of this language.
To update the package, just need to install as usual, going to Admin > Extensions > Manage > Install > Upload the package
Regards,