i did the following as described by gilles.cresci
1/ go to /usr/pluto/bin
2/ ./LMCEUpdate_DownloadXml.sh
3/ ./LMCEUpdate
4/ still downloadind, however I guess I have to do
./LMCEUpdate_Apply.sh
Other solution as described in wiki
Another way to perform system update is use the Orbiter:
More --> Advanced Options --> Force Upgrade Now
then i reboot, installation take sometimes and give me lots of error one for instant Pluto error 1146
thanks totallymaxed