This worked at first, then failed because I had not enabled firmware updates. Now it works better, and I am trying to activate My YouTube. I am offered a code (which seems to change- why?) and having noted it, I go to the library (no computer at home at present), go through the link to activate, enter my gmail account and password, which are accepted, but the code is rejected and I am told a device is trying to connect with me. What device? Why? Help! please & thanks