This is exactly my situation. Was a dealer, personal MX6000, stuck on Splash Screen. I think it gets stuck before the routines are loaded that will interpret the command to go into setup mode. Windows Mobile Device Center does not see it. Does anybody else have any ideas on how to fix?
MX-5000, MX-3000 & MX-850 Remotes + MRF-350 Hitachi 55HDM71 55" Plasma Monitor, Samsung UN46C6500 LED TV, Samsung UN40C6300 LED TV, Yamaha RX-V2700 Receiver, Octava 4x4 HDMI/Cat6 Matrix Switch, etc.