The last week I have had to unplug and restart my Roku Ultra so that the channels work, but this only helps until I finish watching a movie or show. Interestingly, the Roku channel will continue to work, but all the other channels list errors, such as NW-3-6 for netflix or -6 for philo, "something went wrong" "cant connect at this time". Performing a factory reset didn't help either. It seems like it started after I decided to use a micro SD card. I have since removed it but no improvement is noted. System is updated and nothing is wrong with the internet (wired connection). Any Ideas?