Software Updater - It says there is an update but won't update

General Help
21

sudo nano/etc/apt/preferences.d/mozilla
Command not found

22

Sorry, I missed a frees Space between nano and /etc. I will correct that. Here is the correct Form:

sudo nano /etc/apt/preferences.d/mozilla
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23

All done!
Thanks for your help.

24

In 'all apps' there are two Firefox but how do I know which one to delete?

25

When You want delete the Snap Version, use this Command:

If You still have 2 Entries try it with a Reboot and see if after the Reboot is only one Version left.

26

After a reboot there are still 2 entries. The only difference between the two is one logo has a brighter colour than the other.

27

Please open alacarte and go to category internet. Select firefox and at properties check which commands are shown there. Do this with both versions.

28

Did You used the Command or did You only reboot?

29

hello. Maybe a screenshot could help or by listing the apps with APT, Snap or Flatpak ?

apt policy firefox
snap list (and search for it)
flatpak list

Perhaps did you also installed another version such as Flatpak ??

30

Thanks for everyone's help. I think I now only have the .deb of Firefox:

apt policy firefox:

firefox:
Installed: 153.0.3~build1
Candidate: 153.0.3~build1
Version table:
1:1zorin1 500
500 Index of /zorinos/apps/ubuntu noble/main amd64 Packages
500 Index of /zorinos/apps/ubuntu noble/main i386 Packages
1:1snap1-0ubuntu5 -10
500 Index of /ubuntu noble/main amd64 Packages
*** 153.0.3~build1 1000
1000 https://packages.mozilla.org/apt mozilla/main amd64 Packages
100 /var/lib/dpkg/status
153.0.1~build2 1000
1000 https://packages.mozilla.org/apt mozilla/main amd64 Packages
153.0~build1 1000
1000 https://packages.mozilla.org/apt mozilla/main amd64 Packages
152.0.6~build1 1000
1000 https://packages.mozilla.org/apt mozilla/main amd64 Packages
152.0.5~build1 1000
1000 https://packages.mozilla.org/apt mozilla/main amd64 Packages

Snap list:

Name Version Rev Tracking Publisher Notes
bare 1.0 5 latest/stable canonicalāœ“ base
core24 20260410 1643 latest/stable canonicalāœ“ base
gnome-46-2404 0+git.b31ceab-sdk0+git.f0723a0 164 latest/stable canonicalāœ“ -
gtk-common-themes 0.1-81-g442e511 1535 latest/stable canonicalāœ“ -
mesa-2404 25.2.8-snap288 1839 latest/stable canonicalāœ“ -
snapd 2.76.1 27591 latest/stable canonicalāœ“ snapd

Flatpak list:

Name Application ID Version Branch Origin Installation
Flacon com.github.Flacon 12.0.0 stable flathub system
Mesa org.freedesktop.Platform.GL.default 26.1.5 25.08 flathub system
Mesa (Extra) org.freedesktop.Platform.GL.default 26.1.5 25.08-extra flathub system
Intel VAAPI driver org.freedesktop.Platform.VAAPI.Intel 25.08 flathub system
Codecs Extra Extension org.freedesktop.Platform.codecs-extra 25.08-extra flathub system
ZorinBlue-Dark org.gtk.Gtk3theme.ZorinBlue-Dark 3.22 zorinos system
ZorinBlue-Light org.gtk.Gtk3theme.ZorinBlue-Light 3.22 zorinos system
ZorinBrown-Dark org.gtk.Gtk3theme.ZorinBrown-Dark 3.22 zorinos system
ZorinBrown-Light org.gtk.Gtk3theme.ZorinBrown-Light 3.22 zorinos system
ZorinGreen-Dark org.gtk.Gtk3theme.ZorinGreen-Dark 3.22 zorinos system
ZorinGreen-Light org.gtk.Gtk3theme.ZorinGreen-Light 3.22 zorinos system
ZorinGrey-Dark org.gtk.Gtk3theme.ZorinGrey-Dark 3.22 zorinos system
ZorinGrey-Light org.gtk.Gtk3theme.ZorinGrey-Light 3.22 zorinos system
ZorinOrange-Dark org.gtk.Gtk3theme.ZorinOrange-Dark 3.22 zorinos system
ZorinOrange-Light org.gtk.Gtk3theme.ZorinOrange-Light 3.22 zorinos system
ZorinPurple-Dark org.gtk.Gtk3theme.ZorinPurple-Dark 3.22 zorinos system
ZorinPurple-Light org.gtk.Gtk3theme.ZorinPurple-Light 3.22 zorinos system
ZorinRed-Dark org.gtk.Gtk3theme.ZorinRed-Dark 3.22 zorinos system
ZorinRed-Light org.gtk.Gtk3theme.ZorinRed-Light 3.22 zorinos system
ZorinYellow-Dark org.gtk.Gtk3theme.ZorinYellow-Dark 3.22 zorinos system
ZorinYellow-Light org.gtk.Gtk3theme.ZorinYellow-Light 3.22 zorinos system
Adwaita theme org.kde.KStyle.Adwaita 5.15-25.08 flathub system
KDE Application Platform org.kde.Platform 5.15-25.08 flathub system
QAdwaitaDecorations org.kde.WaylandDecoration.QAdwaitaDecorations 5.15-25.08 flathub system

31

But with the:
apt policy firefox results, I do see snap in places?

32

You can check with

apt list -i | grep firefox

which ones of the apt packages in the list are installed on your system.

33

firefox/mozilla,now 153.0.3~build1 amd64 [installed]

34

Because it show the available Packages. When You search with apt list firefox You see directly the Version that is installed. And yes, indeed. You have the .deb Package installed.

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