Man you are doing the poor way, trying to change the server instead of changing the Client.
I can do this for you, just get the 7.6 sprites and put in a 8.54 client.
if you want also you can change the icon, the version and the pic to look like a 7.6 client
You are wasting your time =\
If you want a 8.54 cliente with a 7.6 sprites call me i can do this for free =)