I realize you have HW2.82, but it looks like your problem was initiated using Windows File Explorer in Win XP to install WC FPGA1.1. Is this correct?
I had just the opposite experience with HW2.81. My SYS was corrupted by using Window 10 to install WC’s FPGA1.0.bin in DFU mode (DFU 3.45C), then restored using Windows XP.