Thread:Project:Support desk/Having trouble running update.php/reply

Accessing your webserver with a browser and with a shell are two different things. When you access your webserver with a browser, you can see one PHP version, while on the shell you see another one.

In your case the command "php" executes PHP 4.4.9. The text you got as a response basically tells the solution: Execute the updater with PHP 5.3. All you need to know is the command to execute the PHP 5.3 files on the shell. This might be php5 or php53. So try

php5 maintenance/update.php

or

php53 maintenance/update.php

to run the updater.