Welcome to the forum!
To clarify a few things, when you state I can't download files, does that mean a file you are trying to retrieve from a website? Is there a prompt/ screen message that appears when you have this problem?
Second, you mention
To clarify a few things, when you state I can't download files, does that mean a file you are trying to retrieve from a website? Is there a prompt/ screen message that appears when you have this problem?
Second, you mention
Which upgrade are you referring to?