Switching to Firefox 2.0 from Firefox 1.5 (or lower).

If you find you are still running the 1.5 version of the Firefox browser, you should definitely change over to the 2.0 version. There will not be any more security updates from Mozilla, so we highly recommend following their lead and going with 2.0. As we mentioned, we'll first uninstall 1.5, then download and install 2.0.

1. Click on Start and go to Control Panel.
   
   
   
   


2. Double click on Add or Remove Programs.
   
   
   
   


3. Look for Mozilla Firefox 1.5.0.xx under currently installed programs. Once you locate it, select the program and click on Remove.
   
   
   
   
   
   


4. You will get a screen which will ask if you are sure you want to uninstall it. Click on Yes.
   
   
   
   


5. Now you will get a message saying Firefox is removed from your computer. Click on OK.
   
   
   
   


6. Now go download the most recent Mozilla Firefox (open this page in a new window or tab, then click on the download firefox button on the right).
   
   
   
   


7. Click on Run.
   
   
   
   
   
   You will see the progress box.
   
   
   
   


8. Click on Run again.
   
   
   
   


9. The Setup Wizard will start. Click on Next.
   
   
   
   


10. Select I accept the terms in the License Agreement and click on Next.
    
    
    
    


11. Select Standard and click on Next (or if your familiar with it, choose the Custom).
    
    
    
    
    
    You will see the installing progress bar.
    
    
    
    


12. Click on Finish.
    
    
    
    


13. Now open a web page and click on Help and then About Mozila Firefox.
    
    
    
    
    
    Hurray!! You can see that your version is updated to 2.0.0.11.
    
    

How to have Firefox 3 and Firefox 2 running at the same time

Firefox 3, or Gran Paradiso, is really shaping up with some pretty cool new features being implemented in the recent months. That’s not including the cool FUEL (Firefox User Extension Library) JavaScript library that promises to make extension development a bajillion times more productive, Places for data storage, and the use of Cairo for graphics.

The problem with playing around with Firefox 3 is (by default) you can’t run both Firefox 2 and 3 at the same time since they both insist on using the same profile and insist on running only 1 copy of Firefox at any one time.

Want to get in on checking out the new features but still want good old Firefox 2? Here’s how:

• First, you should create a new profile just for testing Firefox 3. You should do this to keep your precious Firefox profile safe from any problems in Firefox 3. Otherwise, Firefox 3 will use your current Firefox 2 profile by default. You can create a new profile easily with the Profile Manager, which you can access by running:
  

  /path/to/firefox -profilemanager -no-remote

  
  

  

  
  

  
  
  Create a new profile (I gave it an obvious name, ‘minefield’, which is the codename of the current Firefox trunk). If you get confused, the official Firefox website has more detailed instructions on how to create a new profile.

  
  


• Now, you should already have one of the Firefox nightly builds. If not, you can download the latest nightly build from the Firefox nightly build directory. You can start up Firefox 2 normally (just so you can see Firefox 2 and 3 running side by side). For Firefox 3, we’re going to start it differently.


• 
  

  We’re gonna run Firefox 3 using our newly created profile. I’d written earlier on how you can run two Firefox profiles at the same time, and you can still do the same with Firefox 3:

  
  

  /path/to/firefox3 -P minefield -no-remote &

  
  

  The ‘minefield’ in the command is the name of the profile we created earlier. Windows users should leave out the ‘&’ (on UNIX-based systems, this just runs Minefield in the background so that you can exit your terminal).

  
  


• 
  

  Firefox 3 should start up with your new clean profile!

  
  
  
  
  

  That’s the Firefox 3 (Minefield) icon living right next to Firefox 2 icon in dock

  
  

Here’s Firefox 2 and one of the recent Firefox 3 nightly builds running side by side: