Yes, AFAIK there is no such thing as Flash 8 for PDAs or similar devices.
You may look at system requirements http://www.macromedia.com/software/f...fo/systemreqs/
to get the picture.

However there is at least Flash 7 for PocketPC, see http://www.macromedia.com/mobile/sup...vices/pda.html so in theory it is possible to have flash 7. But having version 6 or 7 probably doesn't make difference. How useful is Flash on N770 anyway?