The answer by tudor-Reinstate Monica does work, but will typically roll you back to v.52, which is MUCH too far into the past. You could also have gone with apt pinning and the /etc/apt/preferences file but holding is much easier for this task!

When you are comfortable upgrading again, then you can release the hold: $ sudo apt-mark unhold thunderbirdĮ voila, the latest release is now the default again: $ sudo apt upgradeġ to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.Īfter this operation, 38.4 MB of additional disk space will be used. The following packages have been kept back:Ġ to upgrade, 0 to newly install, 0 to remove and 1 not to upgrade. So now, when you apt upgrade you'll get a warning that packages have been kept back. If you want to stop apt upgrade from upgrading the package again, then you can tell apt to hold a package. Note the warning that the package will be DOWNGRADEDīonus step - lock in that version (a.k.a. The following packages will be DOWNGRADED:Ġ to upgrade, 0 to newly install, 1 to downgrade, 0 to remove and 12 not to upgrade.Īfter this operation, 38.4 MB disk space will be freed. $ sudo apt install thunderbird=1:52.7.0+build1-0ubuntu1

This is easy, just use the syntax = with apt install.Į.g. The three stars *** indicates that this is the version currently installed as per the 'Installed:' line. So now we know (at this time) we have two versions: Apt policy or apt-cache policy (or apt-cache madison)

Download mozilla thunderbird 102.6.1