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I have downloaded the latest Firefox tar.bz2 file and extracted in home directory, I added it in Favorites. But when I launch it shows the older version.

How can I add the latest version in Favorites to launch it directly from the dock?

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4 Answers 4

Reset to default
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For who is having trouble with Firefox Developer Edition, according to this https://askubuntu.com/a/1201328, you have to set the correct StartupWMClass in the .desktop file. My current Firefox Developer version is 98.0b3 and the value for StartupWMClass is firefox-aurora

StartupWMClass=firefox-aurora

Note: shouldn't add quotation in the value of the desktop file

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  • 1
    Thanks a lot, this worked for me!
    – Saiansh Singh
    Feb 16, 2022 at 1:12
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Mine which is working fine on Ubuntu 18.04 :

[Desktop Entry]
Name=Firefox Developer 
GenericName=Firefox Developer Edition
Exec=/home/sebastien/firefox-dev/firefox %u
Terminal=false
Icon=/home/sebastien/firefox-dev/browser/chrome/icons/default/default128.png
Type=Application
Categories=Application;Network;X-Developer;
Comment=Firefox Developer Edition Web Browser.
StartupWMClass=Firefox Developer Edition
StartupNotify=true
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1
  • Thank you it worked. I was missing %u in Exec as well as : StartupWMClass=Firefox Developer Edition, StartupNotify=true
    – Sabunkar Tejas Sahailesh
    Mar 26, 2020 at 6:55
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Copy the .desktop file of your new firefox version to .local/share/applications. This will override your system-wide installed firefox.desktop file. Next time you launch firefox, your new firefox.desktop will be in effect. After firefox has loaded, pin it to the dash.

If still your old firefox version is loaded, then probably the .desktop file, on its Exec= line, just calls "firefox" rather than the specific executable of your new version.

If the .tar.gz of your new firefox version does not contain a .desktop file, then copy your system wide firefox.desktop from /usr/share/applications to .local/share/applications.

In both cases, edit the local copy, and change the Exec= line to reflect the actual file path of the executable of your new version. This file path will depend on where you installed this version.

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  • Hi Vanadium, Thanks for your help. Firstly I added the firefox.desktop file located in /usr/share/applications, It didn't work. Then I added the firefox.desktop in .local/share/applications, It worked. Thanks again.
    – Vivek Sharma
    Oct 31, 2018 at 4:47
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For me changing the NoDisplay from true to false helped in the file ~/.local/share/applications i.e NoDisplay=false

I also added Icon, Terminal, StartupNotify, StartupWMClass

Here is how the file looks now

[Desktop Entry]
Encoding=UTF-8
Version=1.0
Type=Application
NoDisplay=false
Exec=/home/amit/firefox/firefox-bin %u
Name=Firefox
Comment=Custom definition for Firefox
StartupWMClass=Firefox
StartupNotify=true
Terminal=false
Icon=/home/amit/firefox/browser/chrome/icons/default/default128.png
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