You are updating the table based on what?
There would usually a WHERE condition field with a value pointing to the record you wish to update. The UPDATE query is also written a little different than an INSERT query so please do some research on this and Post back if you need help.
What are you expecting to happen to these columns in your query? You don’t seem to assign any values to them.
What line of code is causing the error message? If it’s when you come to prepare the query, it often points to a syntax error in the query. Does your query work in phpmyadmin, obviously without the parameters?