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• During the enumeration process, the FTDI USB controller performs a reset. Depending on the hardware used, this might remove the power from the FPGA and therefore might erase the contents of the FPGA.
• udev rules has default priority 50 for usb device. In case of trouble increase priority
  
  • check if usb devices has RW rights: ls -la /dev/bus/usb/001/*
• non-volatile (.jic) configuration does not work with Ubuntu OS and Agilex FPGA (The problem is still being investigated)
  
  • Workaround: Use volatile (.sof) configuration or Win OS

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