Hi, I installed free ARTIO JoomSEF component. Than I purchased it and tried to activate. I inserted my Download ID and saved changes.When I tried to upgrade it I got this error: "The upgrade server may be temporarily down. Please, try again later."I tried several days to upgrade it and again there is the same problem. Is it problem to the server or something else...Any kind of help will be appreciated...

I solved the problem...

I have the very same Problem today... how did you solve it?!

You need to upload your purchased zip file. Go in JoomSEF component--->Upgrade--->Choose File--->Upload File. And thats it.

visionsink is right.

The message "The upgrade server may be temporarily down" may be shown also in cases, when your server security restrictions do not allow remote connections to other servers. Then online upgrade will not work, unless the restrictions are changed.
Anyway, in such case, you can always use your purchased and downloaded installation package to "install from file".