debian linux – using two browser firefox version

in firefox version 52, this version limit NPAPI support, this technology required for Java applets, which my vpn client using java applet 😦

and how to solve ? using older version firefox just for open vpn applet

i am using debian 8, from crunchbang++ distro

# i am using firefox 50 version, the reason it not to old,
wget -cv 

# extract file, move to bin folder, rename folder to firefox50
tar xvjf firefox-50.0.tar.bz2
mv firefox ~/bin/firefox-50

# set another profile user
~/bin/firefox-50/firefox -ProfileManager

# create new profile
# and lauch the firefox

# you can create with link for launcher


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just to remember what i had known :)

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