please check this tool:
http://www.cisco.com/web/techdoc/optical/15000r/upgrade/guide/ons-upgrade.html
it's very useful.
there are points to keep in mind while doing upgrade from 9.203 to 9.8
To upgrade a multi-shelf node from R9.2.0 and earlier, perform a step upgrade to R9.2.1 and then to R9.4.0 , R9.6.0, R 9.6.0.3, or R 9.6.0.4.
i would say, upgrade your node to 9.403 or 9.60 than go for 9.80,
don't do upgrade directly to 9.80/