If you are currently running OpenIndiana oi_147 or oi_148, first, verify you have the correct publishers set:

# pkg publisher
PUBLISHER                             TYPE     STATUS   URI
openindiana.org          (preferred)  origin   online   http://pkg.openindiana.org/dev/

If your openindiana.org publisher is set to a different URI, for example http://pkg.openindiana.org/dev-il/ (our release candidate branch), you can correct this with:

# pkg set-publisher -O http://pkg.openindiana.org/dev/ openindiana.org

If you currently have the opensolaris.org publisher set, we would strongly recommend unsetting it by running:

# pkg unset-publisher opensolaris.org

You can now identify what will be upgraded by issuing the command:

# pkg image-update -nv

The -n flag specifies to perform no action (i.e. perform a trial run), and the -v flag is the verbose option, to provide additional output.

If you are satisfied with the actions to be taken, you can perform the upgrade by typing:

# pkg image-update -v

You may want to consider also passing the "--be-name" flag to give the new boot environment created a more memorable name, such as oi_151a.