Click Help | Check For Updates. The next menu will display a list of add-ons which won't work with the new version. The update is automatic apart from that. ---- If you find you don't like the layout of the new version, here are some tips to make it look like the version you're using now.<br><br> * Right click a blank part of the tab bar and click "Tabs on top" to remove the checkmark. Tabs will subsequently reappear below the search bar.<br><br> * Repeat the same steps, but click the top one called "Menu bar". This will reinstate the text links at the top.<br><br> * To rearrange the layout, repeat the same steps again and choose "Customize". A panel will open and while that remains onscreen, you can move elements like toolbars, buttons etc around and place them anywhere you wish. You can also drag anything you don't like into that panel and add anything you want by dragging it out of there.<br><br> * To replace the status bar at the foot of the page, install this add-on: https://addons.mozilla.org/en-US/firefox/addon/status-4-evar/<br><br> See screenshot. Both top and bottom views are FF4.