How to Install new themes (jar files) in Firefox
Contributed by risherz 
Tagged: Mozilla Firefox Installing new themes in any version of Firefox.
To install a new theme all you have to do is…
1. Unzip/Unrar the downloaded folder (of course!)
2. Open Firefox
3. Click on Tools
4. Then on Themes to open the themes window
Now also open the folder if the file is in the folder…
5. Just drag and drop the jar file into the theme window
6. Click on OK when Firefox asks you if you want to install the theme
7. Restart firefox
Now just open the themes window again and choose the theme and click on “Use Theme”. Then just restart firefox again to see you theme in action.
After that, have fun browsing with the theme that you like!
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Ricardo said on October 25, 2008
very useful thx i forget this manually
RenegadeSoldier said on March 29, 2009
I have tried to install the Leopard lookalike ‘LeoFox’ but it doesn’t work! I’ve tried the method but it just says: “LeoFox” will not be installed because it does not provide secure updates”.
How can I fix this? Or get secure updates for LeoFox?
lastontheline said on April 30, 2009
not compatible with 3.0.10… nooooooooooooooooooo…
Jack said on June 17, 2009
Thanks a lot buddy…
Flight said on November 12, 2009
this information is new for me , thanks
Kedar vyawahare said on July 7, 2010
themes not compatible with firefox with 3.5.0 firefox
CHT said on July 26, 2010
Make sure the theme can work for your version of Firefox and (the theme) is regularly updated to support new versions of Firefox.
Anonymous said on October 1, 2010
Thank’s
Manujapanday said on November 3, 2010
Very useful. Thank you very much
Cathy said on December 1, 2010
Thanks man..i was a little confused with this. Very useful
Ercan said on March 22, 2011
Thank you very much. It is very useful tip
Charlespatel007 said on June 26, 2011
thankssss IT’s usefull