Sendo still working then

No. It is long gone. It is past. It is also quite clear on the site you post

"Hi, I just bought Sendo Z100 - one of the ten prototypes in the world , can i use on it qtek programs and games? Thanks."

I think the point was that that ONE still works, even after all this time. Not that they were about to start mass producing them 😉

By "one still works" you mean:It can boot up and display a home screen,crash,boot up again,display a home screen a little bit longer then crash again,boot up and display a home screen for a really long time(5-10 min) then while you are making a call it crashes and deletes all your contacts.Although you might expect this from any other prototype device,the features mentioned before are standard for any MS powered Smartphone so imagine how would an prototype of an MS Powered smartphone work. 😉

BTW: Do you know how many prototypes were in "working" state and never saw the light of day?