( # lustatus )
( # lufslist )
( # ludelete snv46 )
# lucreate -c "snv47" -m /:/dev/dsk/c0d0s3:ufs -n "snv48"
# lofiadm -a /home/sickness/iso/solaris/sol-nv-b48-x86-dvd.iso /dev/lofi/1
# mount -F hsfs /dev/lofi/1 /mnt
( # yes | pkgrm SUNWlur SUNWluu )
or ( # yes | pkgrm SUNWluu SUNWluzone SUNWlur SUNWlucfg )
( # yes | pkgadd -d /mnt/Solaris_11/Product/ SUNWlur SUNWluu SUNWluzone )
or ( # yes | pkgadd -d /mnt/Solaris_11/Product/ SUNWlucfg SUNWlur SUNWluu SUNWluzone )
# luupgrade -u -n snv48 -s /mnt
# luactivate snv48

# shutdown -y -g0 -i6

check also:
http://notallmicrosoft.blogspot.com/2008/10/recap-live-upgrade-with-zfs-root-using.html