I am going to have to use Firefox version 28 forever, exposing myself to many security risks in the process, because I do not like the drastic redesign of the interface in version 29 and Mozilla have not included an option to switch to the old interface. Many support forum posts argue that bringing back the old interface is a 'simple' matter, but it is not. I have spent many hours on two PCs so far, fiddling with the recommended third-party add-ons (e.g. Classic Theme Restorer) in the attempt to get the browser looking the old way again. I can ascertain with confidence that it is NOT possible to get things looking exactly as they did before, and certainly not looking like the particular customized setup I had myself. I have now re-installed version 28, and intend to continue using it indefinitely. However, automatic updates are still enabled, and Firefox has already tried to update itself to version 29 again. How can I disable automatic updates for good? I have tried some tricks like deleting the update files and then removing the update URL in about:config, but a new update was still downloaded somehow. How can I nix automatic updates for good?