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hello, The following is my description of the problem： I use the FPGA board is nexy Nexys Video A7 board, want to achieve usb and PC information transmission, want to use the synchronization fifo mode,I used FTDI software (FT_Prog.exe) to eeprom into 245fifo mode, but vivado since then show the link is not the device, bit file can not be written. I have two the same board, another board did not eeprom configuration before, vivado can link to the equipment, but after the configuration also appeared in this issue, is not my configuration eeprom there is a problem?Here's my screenshot of the problem。 I hope you will solve this problem for me。 wang