Just a reference base

trouble@sun:$ chflags noschg *

trouble@sun:$ cd /usr/src
trouble@sun:$ make buildworld
trouble@sun:$ make buildkernel
trouble@sun:$ make installkernel

reboot into single user
trouble@sun:$ cd /usr/src
trouble@sun:$ make installworld
trouble@sun:$ mergemaster
trouble@sun:$ reboot

trouble@sun:$ tar zcvf - / | ssh user@255.255.255.255 "cat > /backup/data.tgz"

trouble@sun:$ cd /
trouble@sun:$ ssh user@255.255.255.255 "cat /backup/data.tgz" | tar zxvf -

trouble@sun:$ gksudo "update-manager -d"