I'm having troubles updating my OwnCloud with the Updater. I have installed OwnCloud to a Webspace I rented so I don't have direct access to many things such as command lines. The bug that I have is described here and also the solution, however I have no clue how and where to apply this patch.
Actual Version: 9.0.4
Update Version: 9.0.5
PS: Please write the solution as easy as possible, I'm neither a real computer guy nor a native english speaker.