Quote Originally Posted by bplex
If your VPS is managed, then you would have them do it. If your VPS is unmanaged, then you would be responsible for doing it. It's fairly simple to do. You can follow the installation instructions on Zend's website.
It is unmanaged. I have done the update and here is what i am getting from trying to get to admin section:
Fatal error: Incompatible file format: The encoded file has format major ID 9141721, whereas the Optimizer expects 2 in /home/mysiteuser/public_html/admin/main.php on line 0