If you are running OS2006 then the version of Opera you have (8.02) is all you are gonna get!!! Opera on these devices is not upgradable! If you want a more uptodate browser you can try the Mozilla based browser from here:

http://browser.garage.maemo.org/news/6/

BUT this is also now pretty out of date & runs much slower than Opera.
Other option is to flash your tablet with OS2008HE which has a more upto date Mozilla based browser. BUT be aware that HE releases are somewhat unstable & take a fair amount of geeky computer & Linux knowledge to install alot of the applications.