I have several Roku devices in house, upgraded my home theater device to the latest Roku Ultra 4800X but have been lots of reboot issues in Netflix, Vudu
System seems to hang and eventually reboots. Software ver show 9.41 build 4222-C2
do I have a bad device or bad software?
Latest firmware for the 4800 is 9.4.1 build 4236 - try updating the firmware manually: Settings/System/System update/Check now