Re: fetch free channel pack can i change from variety to knowledge pack
Yep. Actually you can change packs any time 50 times a day. Just go into the Fetch unit and change the subscription in the menu.
The IMPORTANT thing to do is unsubscribe first, then resubscribe to the new pack. That way at any given time you only have one pack active. Optus just provide a fixed rebate for the pack on your bill, so as long as you only ever have one selected at the same time it will always be free.