Have you tried and it doesn`t work?! I mean...nobody claims to have a W660 firmware...just wotan....there are many upgrades from K series to W just like K750 to W800 . And W660 runs on the same DB2020 platform like K610. minor hardware changes. It should work :-? It`s just that... :-s we need that firmware...Damn! just to try...like that we can tell that it`s not working