How to install Plesk updates
Updating Plesk via a command-line interface /usr/local/psa/admin/sbin/autoinstaller –select-product-id plesk –select-release-current –reinstall-patch –install-component panel Plesk 11.x and 12.0 for Windows “%plesk_bin%\ai.exe” –console –select-product-id panel –select-release-current –reinstall-patch –install-component panel