Just like the markets, technology changes fast, so if you're doing your trading online via Interactive Brokers' Trader Workstation software, you'll want the latest version available. IB's TWS software gives you real-time access to the latest market data and movements so you can make the correct trading decisions. Upgrading the software is virtually automatic if you are a subscriber.
Log in to your computer if you have the standalone program, as it will trigger the update wizard to automatically check for updates and install them on your computer.
Click on the "Start" menu if you want to manually check for updates on the standalone version. Click "Programs," "Startup" and then "Check for TWS Updates."
Log in to the IB TWS website as normal if you use the browser-based version of TWS. The online version is always up to date.