Hey Clemens, I just tried out the madfu loader with my Sonica and ran into a problem. usbfs is mounted on /proc/bus/usb lsusb shows: Bus 002 Device 003: ID 0763:2805 Midiman I tried running: ./madfuload -f ma005101.bin -n -D /proc/bus/usb/002/003 and I get: downloading block 1 failed - No such file or directory It's definitely finding /proc/bus/usb/002/003, and if I point to a non-existant file I get: cannot open /foo - No such file or directory I get the same error if I point it at a non-existant firmware. I'm running everything as root, running a 2.6.0-test5 kernel. Anything else I should try? Thanks, Stephen Hassard On Tue, Sep 09, 2003 at 11:21:46AM +0200, Clemens Ladisch wrote: