You can clear the cache data using the following procedure:
1) Power on the receiver and keep the "red" button pressed.
2) The "system recovery utility" screen will appear.
3) Select "2. Factory Reset"
4) Select "1. Erase cache data"
DO NOT TRY DELETING OTHER ITEMS SHOWN IN THE MENU.
Erasing the cache data can help with any issues during starting up and also connectivity issues.
