Recover Mozilla Profiles

retain the default profile for firefox (from the installation) and recover the old profiles:

backup the current profile.ini to profile.ini.bak

open terminal

cd .mozilla/firefox/

cp profile.ini profile.ini.bak

copy profiles from /home//.mozilla/firefox to /home//.mozilla/firefox

modify profiles.ini to include old profiles

old profile:

[General]

StartWithLastProfile=1

[Profile0]

Name=default

IsRelative=1

Path=<random>.default

new profile:

[General]

StartWithLastProfile=0

[Profile0]

Name=default

IsRelative=1

Path=<random>.default

[Profile1]

Name=default_old

IsRelative=1

Path=<random>.default

Default=1

[Profile2]

Name=36x

IsRelative=1

Path=<random>.36x

<random>

[Profile3]

Name=_36x

IsRelative=1

Path=<random>._36

start firefox and test