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Netgear DG834GSP V3
http://forums.whirlpool.net.au/forum-replies-archive.cfm/799386.html http://forums.whirlpool.net.au/forum-replies.cfm?t=803022 http://forum1.netgear.com/showthread.php?p=78746
Seems like you are screwed, I'd say purchase a new modem. Be sure to call Optus to ask "How do I update my modem", record the phone-call and post it on here.