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Temporarily install old version of Firefox for testing
# Firefox 33 was the last version to support SSLv3 (
# Firefox 51 was the last version to support NPAPI plugins (e.g. Java) (
# Firefox 56 was the last version to support XPCOM- and XUL-based add-ons (
tar -xvf firefox-$firefox_version.tar.bz2
mv firefox firefox-$firefox_version
cd firefox-$firefox_version
mkdir profile
# Disable automatic updates and default browser check
echo "user_pref(\"app.update.enabled\", false);
user_pref(\"\", false);" > profile/user.js
./firefox --profile profile
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