Ok so i was able to replicate the problem, i used my sisters phone to flash DI01.... then by accident i decided to flash superdark, but forgot it was DJ05 based, so after it was flashed i decided to flash the modem. and bam no USB support So i have officially knocked out the 64bit theory and the full package theory..... So it looks like flashing DJ05 modem individually can cause this problem in some fascinates...ill spend the night looking for a solution
Edit: ok i got the phone USB working again,,,While connected in USB debugging. download and install.
October 27th drivers from this site.
Samsung
Wait about approx 5 minutes while the drivers configure themselves after installed. thats how long it took for me ,
I dont know if this will work for you , but it worked for my sisters fascinate after completely not recognizing the phone at all