You should be able to find all the GTR files here.
http://www.m4driving.it/files/33,1.html
I got my copy from the Emporium today and after some goofs these are the
steps I took to get it installed and updated.
Install discs/start game and update online(not Multiplayer) then you will be
at 1.1. Then download and install official GTR 1.2 patch. Then go back to
update online and get ver. 2.1 which addresses multiplayer issues. Then
install the german-english patch. After that go to multiplayer and create an
online name and password. Enter the online key on inside front cover of
case. I just ran online and there are a ton of players. Many speak english
and answered some questions in chat. It works great! I am sure others have
loaded this stuff differently but this is what worked for me.