Hello everyone! I'm following this design here: https://www.thirtythreeforty.net/posts/2019/12/my-business-card-runs-linux/
and while I have my board built, I seem to be having trouble with flashing. dmesg reports that my F1C100s is in FEL mode; however, when libusb tries to talk to it, the device disappears and reappears: lsusb: Bus 009 Device 014: ID 1f3a:efe8 Allwinner Technology sunxi SoC OTG connector in FEL/flashing mode dmesg: usb 9-6.1: new full-speed USB device number 15 using xhci_hcd usb 9-6.1: New USB device found, idVendor=1f3a, idProduct=efe8, bcdDevice= 2.b3 usb 9-6.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 command: sudo LIBUSB_DEBUG="1" ./sunxi-fel --list --verbose libusb: error [get_usbfs_fd] libusb couldn't open USB device /dev/bus/usb/009/015, errno=5 libusb_open() ERROR -1: Input/Output Error subsequent dmesg: usb 9-6.1: reset full-speed USB device number 15 using xhci_hcd usb 9-6.1: USB disconnect, device number 15 usb 9-6.1: new full-speed USB device number 16 using xhci_hcd usb 9-6.1: New USB device found, idVendor=1f3a, idProduct=efe8, bcdDevice= 2.b3 usb 9-6.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 sunxi-fel version: v1.4.2-178-gdf60a46-dirty (master from github). If there is more information that I can provide then please let me know! Unfortunately, I feel like I don't know what to ask, so my apologies if I'm forgetting something obvious or if this question is too vague. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/42fbdc4e-35e0-4436-b6ae-cb2eafcd0c88n%40googlegroups.com.