Unfortunately the flash in N900 is 100% backwards compatible and there's no not working flash thingy on the entire web

However I doubt he even has an N900 since he couldn't provide any link behind http://tablets-dev.nokia.com/nokia_N900.php
IMHO being unable to complete such a simple task clearly proves he might not even own the device himself, so I won't stop calling him a troll as I will call you since you obviously don't have the device if you make such a far fetched statement )