Download and install tuner pro rt.
Then go to their files section online. The .xdf is there, or at least it used to be.
As far as the 7603 OS; go to the search bar above and top in7603.
Find the page where Eagle Mark uploaded them ma y years ago.
PersingC also has a very good 7603 .Bin thread. His is probably the most extensive I ha e used.
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