One last thing I can think of to try.
Do a cold init on box.
It will remove any custom settings, but doesn't remove any recorded content.
COLD INIT
- Unplug the box. Wait about 20 seconds.
- Plug back in and immediately begin repeatedly pressing MENU on remote until you see the word "run" on the front display
- Using the down arrow button, go down until you see "COLD".
- Press Ok and the box goes through activation process, including downloading the current IMG software