Back in August, Mozilla released the alpha version of Firefox 3.6, code-named Namoroka. Three days ago, Mozilla announced the availability of Firefox 3.6 Beta 1 with several new features, including Windows 7 Taskbar Thumbnail Preview support for tabs (just like IE8).
If you are keen to try out Firefox 3.6 Beta 1 and at the same time worried it will mess up with your Firefox 3.5, I have got a solution for you. Indeed by default, you can’t run both versions of Firefox together because both of them using/sharing the same Profile. So let me run through how to get your Firefox 3.5 running side-by-side with the new 3.6 Beta 1.
Let’s Get Started!
First, go and download Firefox 3.6 Beta 1 if you haven’t do so. If you have, great! Now, just install Firefox 3.6 Beta 1 as usual.
Please take note that, after finish installing don’t launch yet, else it might mess up your current Firefox profile.
Now, Run this command: firefox -profilemanager -no-remote to launch Firefox Profile Manager
Now create a new profile for FF3.6b1 by clicking the Create Profile… button. A wizard will popup. Give your new profile a name and click Finish. Now you can close the Profile Manager.
Quick tip: Give a name that you can easily remember and make sense. As for this guide I use Firefox3.6Beta.
OK, we are almost done. Now find the Firefox 3.6 Beta 1 shortcut on your Desktop and open up its Properties. At the “Target:” section add this line: -P Firefox3.6Beta -no-remote at the end. In this example it is “C:\Program Files\Mozilla Firefox 3.6 Beta 1\firefox.exe” -P Firefox3.6Beta -no-remote”
Now, when ever you launch FF3.6b1, it wont mess with your default FF3.5 profile so you can still run the current Firefox 3.5 without any issues.