i am root all the time, i really don't why it's not working for me. i tested 2 others related projects:
works fine (lib-usb)
works too (hid)
also, i tested on Windows, i don't think there's problem with permission on this platform (well, i don't really know how Windows works...).
anything else i should try? ah yes, i've also tested past release:
usb 1-2: usbfs: USBDEVFS_CONTROL failed cmd bootloadHID rqt 128 rq 6 len 256 ret -71
Warning: cannot query manufacturer for device: error sending control message: Protocol error
Error opening HIDBoot device: Communication error with device