Installing and Running all of the Wonderful Firefox Releases

Since I develop web applications, I feel obligated to make sure my applications work in all sorts of browsers.  (Hell I even still check IE 6 from time to time…).  I don’t really test Chrome our Safari that much though since most of my users of my major applications are IE and/or FF users.  Anyhow, Firefox is being a pain with all these 6 week releases and I didn’t want to deal with it so I stopped testing past 4.0.  Today I opened up my browser and it was asking for me to download Firefox 7.0!  *Sigh*  Ok Firefox, you win:

I am now running IE 6, IE 7, IE 9 (has compatibly modes for IE 7,8,9) and Firefox 3.6, 4, 6 and 7.  (I couldn’t find the download for Firefox 5.  Apparently it had a lot of security issues so they probably don’t want you to have it.)  How did I do this?  Easy, you just create a new profile for each Firefox and install each version in a separate location.  Assuming you already have one version of Firefox installed:

  1. Download all of the versions that you want to work with
  2. Install each version into a separate location
    1. Do a custom install to do this.
    2. Make sure that you do not check “open after install”
  3. Create a new profile to use for each version
    1. Close Firefox.
    2. Start -> Run -> C:Program FilesMozilla Firefoxfirefox.exe –P
    3. Click on Create Profile -> Next -> Change the name to version -> Finish
    4. Do this for each version that you want.
  4. Create Desktop Shortcuts to run the different versions of Firefox
    1. Right click on Desktop and click New -> Shortcut
    2. For the path enter the location of an installed version of Firefox and open it with the correct profile name you created
      1. “C:Program FilesMozilla Firefox  4firefox.exe” -P Firefox4
    3. Repeat previous steps for each version you want.

And you get:

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