From this information, I would think there is something
wrong with the
device bootloader firmware. But please create a new ticket on
and provide the
information that is requested. Note also that the latest release of
dfu-util is 0.10 and you are using a fairly old version.
On Sat, Apr 3, 2021 at 11:35 PM Jerry wrote:
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.
Found Runtime: [20b7:1540] devnum=0, cfg=1, intf=1, alt=0, name="UNDEFINED"
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.