So I dumped the IOS37-64-v2070.wad from my NFSU disk and compared it to the IOS37-64-v2070.wad floating around on the net. The files are slightly different. The IOS37 from NSFU is 1918400 bytes. The IOS37 on the net is 1918336 bytes There are also 263 bytes that miscompare between them. Any ideas what the differences between the IOS37s might be? Is there any region info differences between IOSs? FWIW the IOS38, 53 and 55 extracted from NFSU match those floating on the net. Thanks.