well dude,,..the function of the keys was jumbled after the upgrade..the mew firmware doesnt exactly or perfectly match..try moddong back you good ol firmware and see what happens next..if dtill no, well you may try a risk by using the waterlily ar this site
http://www.mympxplayer.org/waterlily...-mb-df256.html
well the utility sometimes doesnt recognize well the firmware, but if the utlity recognizes the firmware..there is a function that allows you to control to change some functions like the button assignments for every function..good luck and dont forget to backup all your working firmwares before editing