DCU-11 Cable and Z800i

hi to everyone,
Please I really get tired from DCU-11 cable. It doesn't work for update Z800i from Sony Ericsson's official site.
So, I need to now if this cable "DCU-11" is suitable with upgrading z800i?
It always says "No USB cable found", when I need to update my Z800i.

any help please, thx,

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You need the sony ericsson DSS 25 Desk stand. Only thing I found that works.