Dear all, Recently I bought a device ATUSB which uses dfu-util 0.7 to write the flash. I use my Raspberry Pi 4 and it runs Ubuntu 20.04. After installing dfu-util 0.7, I run the following commands to flash atusb firmware into it. $ sudo dfu-util -l dfu-util 0.7 Copyright 2005-2008 Weston Schmidt, Harald Welte and OpenMoko Inc. Copyright 2010-2012 Tormod Volden and Stefan Schmidt This program is Free Software and has ABSOLUTELY NO WARRANTY Please report bugs to [email protected] Found Runtime: [20b7:1540] devnum=0, cfg=1, intf=1, alt=0, name="UNDEFINED" $ sudo dfu-util -v -D ./atusb.dfu dfu-util 0.7 Copyright 2005-2008 Weston Schmidt, Harald Welte and OpenMoko Inc. Copyright 2010-2012 Tormod Volden and Stefan Schmidt This program is Free Software and has ABSOLUTELY NO WARRANTY Please report bugs to [email protected] Opening DFU capable USB device... ID 20b7:1540 Did not find cached descriptor WARNING: Can not find cached DFU functional descriptor Warning: Assuming DFU version 1.0 Run-time device DFU version 0100 Claiming USB DFU Runtime Interface... Cannot set alt interface zero After this error is shown, the LED on my ATUSB is blinking. Any idea? I have tried reinstalling dfu-util or rebooting, but none of them work. Any advice is appreciated. Yours, Jerry |
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