not the problem of NC, of course. Go and get support from Nethserver, they seem to be responsible after what I read from you.
And as you won’t provide any valid feedback nor are you willing to work with commandline, I’m closing this thread…
- for being old and solved (NC doesn’t support skipping of major versions)
- for lacking interest in getting your problems fixed
- for using bad assumptions on a user (was reported and got “fixed”)