Szia,
I had the very same problem. My brand new TV set came with Youtube service, which was deleted after firmware update without any warning and not possible to be added (I have also tested the "ver.T-CHU7DEUC-2004.0)" one, same crappy behaviour). Only these useless Yahoo widgets are available, when the the firmware is newver than 1006. However, as long as you have not upgraded the firmware further, you can go back to the previous firmware by going to "?" menu item of your TV set -> Software Upgrade -> Alternative Software -> choose ..._001006. After your TV set automatically turns off and on, in order to get Youtube service back you need to do one more thing: factory reset by holding the Exit button on your remote control for about a minute or so. Then a question will appear on the screen - confirm it. After you turn the TV on again, Youtube is back. // I haven't tried Germany as a country when having the new firmware with Yahoo Widgets whether Youtube would finally be present. // However, this is a temporary solution , as I am not quite sure how long we can live with the old firmware, as e.g. new and new film codecs might be released.
But I am really upset by Samsung that I bought the TV set beacause of the widely advertised Youtube service in magazines, and they just take it away by firmware upgrades. This is not professional customer-oriented behaviour, guys!!!