Well, long time ago I downloaded Windows 8 Enterprise x64 from MSDN and activated via microsoft, and now I got RTM and GA from other sources (what I mean it's that I did not download directly from MSDN). Now that I have some time I make some tests. The activated machine has never get internet connection, results: Enterprise 8 and RTM iso: -I use the Setup.exe with graphical options. - That iso don't allow me inplace update, only install with keep data, keep data and aps and keep nothing. Using keep data and apps, I got 8.1 deactivated. Enterprise and GA iso: -I use elevated cmd ---> setup.exe /auto:upgrade (seem this option is the same as install and keep data & apps) -Using graphical interface of setup.exe is the same as before, no inplace update. Using keep data and apps, I got 8.1 deactivated. -My account password did not work, as it install english keyboard layout and set it to default (mine is spanish) -A new pop-up appear after install in the upper right corner telling me how to use the charm bar (something that did not appear on RTM) Is this normal? Or should I think I download a bulls**t with same SHA1 as MSDN? Why I can't make inplace update with an activated Enterprise machine and GA iso? and moreover, Why are this iso's so different? Then how to make inplace update to Enterprise edition without internet connection?