Advertisements I think S03 is a catchall error for a bunch of different problems. Your S03 problem doesn't seem like the same as what folks encountered earlier. In those cases it tended to be older units and large guide data changes. CPI&TDL fixed that, but it doesn't seem to have any effect on your issue. Next guess is as previous poster mentioned, possibly network issue. You could try using a different connection, perhaps wifi hotspot on your phone if it is free.