theonlycasper Posted May 3, 2020 Report Share Posted May 3, 2020 Please help. I have a Papilio Duo 512K and I am running Windows 10. I can't upload a sketch from the DesignLab IDE without the use of an ISP bit file. I need the FPGA for other needs, so I cannot program using ISP. I have read through and found that programming directly over USB is possible: http://learn.gadgetfactory.net/2015/01/15/designlab-quickstart-duo-avr/ However, this did not follow my expectations and the device is nowhere to be found. Every time I press the FPGA reset button, the Papilio DUO AVR Serial Port becomes available in device manager and DesignLab. The moment I upload or lift my finger off the reset button, the serial port vanishes into the hidden devices. Things I have attempted: Uploading while pressing reset. Burning the bootloader, but same issue as the AVR serial port. Multiple uninstalls and reinstalls of the DesignLab IDE (Version 1.0.8) and included drivers. FTDI driver installation. Unchecking Serial Enumeration. Direct connections to PC, No USB hubs. Please help me fix this issue. Quote Link to comment Share on other sites More sharing options...
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