[alsa-devel] Tascam US-1641 Firmware File

Clemens Ladisch clemens at ladisch.de
Thu Feb 5 13:08:25 CET 2009

Donnie Menig wrote:
> I have the Tascam US-1641 firmware now... I'm pretty sure I did everything
> right, but I keep getting the "can't modify CPUCS: Broken pipe" or "unable
> to open for input." error.

You didn't tell what you're doing with the firmware, or how you're doing
it, but I guess you are trying to download it.

"Broken pipe" means error code EPIPE, which means, according to
linux/Documentation/usb/error-codes.txt, "endpoint is stalled", which
means that the device did not like what you did to it.

The "CPUCS" indicates that you're trying to use the EZ-USB download
protocol; however, the firmware file is too big for that, i.e., your
device is based on some other chipset.

Best regards,

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