Hi - if updates are not fetched for more than 60 days then the data tables need to be re-installed. It sounds like this is what has happened in your instance.
In this case, you need to re-install the tables by downloading and installing (n.b. the usual install procedure in MySQL will replace your existing, out of date, tables) the latest full tables from the download page after logging in with your membership details. Once you have installed the latest tables, the updates should work as usual.