hello, if I want to update the firmware of my 255 music from 09.12 to 11.12 how can I do? I don't want to put 12.23 because it's a disaster. Thank you
hello, if I want to update the firmware of my 255 music from 09.12 to 11.12 how can I do? I don't want to put 12.23 because it's a disaster. Thank you