Newbie requests help

[Castellon]

By refreshing do you mean the screen flashes?

If so this is caused by something in the background causing a conflict.
Music match is the number one culprit lately. look for MM.exe in your processes.

 

[Castellon]

You need 1.3a first, 1.3b is add on not patch.

 

[Castellon]

Mirror just means that there are other sites that have a copy of the patch.
This is so if one site is down or busy/slow you can get it somewhere else.