Upgrade Opensolaris

To upgrade OpenSolaris image :

opensolaris:~$ pfexec pkg image-update

Please update pkg(5) using 'pfexec pkg install SUNWipkg' and then retry
the image-update.

No worry !

opensolaris:~$ pfexec pkg install SUNWipkg
DOWNLOAD PKGS FILES XFER (MB)
Completed 1/1 110/110 0.41/0.41

PHASE ACTIONS
Install Phase 3/3
Update Phase 167/167
PHASE ITEMS
Reading Existing Index 9/9
Indexing Packages 1/1