Hi Hoyla and welcome to the TikiWiki Commnity!
No, you need to get the full package and do an upgrade (open your browser at the tiki-install.php in the folder where you located your new tiki3. And follow the steps from there in (plus previous suggestions from the documentation page, as usual, etc.).
Ask again if in doubt
BTW, is there any other video server that is not barred from Thailand?
(I might upload it else where also for you and other users like you)
Can you see this, for instance?: