I want to update my firefox on Ubuntu 12.04. Tried downloading more than once. It gets to the point where the files are extracted, but gives me no options to "run" or "install." Am I supposed to highlight one of those extracted files and run it, in order that I can install the new firefox? I'm on version 52 right now. I tried using your suggestions of going to terminal and typing in cd ~ extracting the contents of the downloaded file (but there are many files) using tar xjf firefox-*.tar.bz2 being sure firefox was closed and starting Firefox, running the firefox script using ~/firefox/firefox I'm not sure about that last step...I don't know what it means to run the script in the firefox folder. I don't know what the firefox folder is, but if firefox is already closed, how do I run it in the firefox folder. I need step by step instructions...very detailed. I did all of the above steps in terminal. Perhaps that was incorrect.