actually, just did : devel-su ssu re 2.1.2.3 version --dup reboot everything seems to work (at least,it reboots )
#version --dup REFRESHING CACHE AND DOWNLOADING PACKAGES [W] unknown:0 - QDBusConnection: name 'org.freedesktop.PackageKit' had owner '' but we thought it was ':1.68' Resolving: 100% Error: cannot install both pattern:jolla-configuration-f5121-0.0.34-10.51.2.jolla.noarch and pattern:jolla-configuration-f5121-0.0.34-10.51.2.jolla.noarch