Thanks a lot Davidfor
i install the image on my sd all works
but after the update my sd card is corrupt i think my kobo as a problem.
here is the ouput of dmesg after plugin the kobo with the new firmware
Code:
usb 6-1: device descriptor read/64, error -71
[ 35.076058] usb 6-1: device descriptor read/64, error -71
[ 35.304109] usb 6-1: new full-speed USB device number 3 using uhci_hcd
[ 35.432183] usb 6-1: device descriptor read/64, error -71
[ 35.668087] usb 6-1: device descriptor read/64, error -71
[ 35.776131] usb usb6-port1: attempt power cycle
[ 36.212058] usb 6-1: new full-speed USB device number 4 using uhci_hcd
[ 36.628028] usb 6-1: device not accepting address 4, error -71
[ 36.748059] usb 6-1: new full-speed USB device number 5 using uhci_hcd
[ 37.164052] usb 6-1: device not accepting address 5, error -71
[ 37.164098] usb usb6-port1: unable to enumerate USB device
i don't know what to do
Thank's to you