upgrading Turnkey Linux Omeka 13.0 appliance

I installed turnkey Omeka 13.0 on linux from http://mirror.turnkeylinux.org/turnkeylinux/images/iso/turnkey-omeka-13.0-wheezy-amd64.iso on vitual box.

I have no idea about linux. but trying to learn.

The currently available plugins on the web for themes are not compatible with the version I installed (2.0.1). I need to upgrade my omeka version. How do I?

Any updates?

Solved the problem. Created another instance of Omeka appliance (old version) and replaced the omeka folder with the omeka-2.3 folder, did change some file permissions and now I am running omeka-2.3 without getting into the nitty-gritty of Linux.