Full data are kept for the following versions only:
-old stable (4MLinux 5.1),
-current stable (4MLinux 6.0),
-current beta (4MLinux 6.1).
LiveCDs are available for all "historical" releases.
Starting from 4MLinux 6.1, it is possible to download and
update your system without the necessity to reinstall it
from scratch. The "zk" script (4MLinux package manager) is
able to update your 4MLinux to its latest stable version
(which is now 4MLinux 6.0 Allinone Edition).