hm...seems like no need.

i also not sure.

initially i downloaded the enGB client, same like yours. But then again, there's some problem to that, and you will have to redownload the client if you download it too early so that it able to patch up something. If you din't then you won't be able to install

So last night i try to redownload the enUS client, and hence i have to redownload the whole 8gb++ file. Due to something happened to my connection, I can't finish download it
Today I try to redownload the enGB client, let it run awhile (pointed to the same folder where i downloaded it), and then i can install liao =.='