Upgrade 13.0.3 to 14.0.4 using zip on debian 10

I’m trying to upgrade from 13.0.3. to 14.0.4.
in the dir /usr/share/dolibarr/* are two dir

  1. htdocs
  2. scripts
    The instruction seems to be simple.
    wget Dolibarr ERP - CRM - Browse /Dolibarr ERP-CRM/14.0.4 at SourceForge.net
    unzip dolibarr-14.0.4.zip into Dolibarr servermap: /usr/share/dolibarr
    cp script and htdocs from dolibarr-14.0.4 to /usr/share/dolibarr
    rm /var/lib/dolibarr/documents/install.lock
    open browser …/dolibarr/install
    All my options for upgrade from 13.0 to 14.0 are gradeout and I can only start new install and that gives an error.
    This my first to upgrade dolibarr. Any suggestions?