I haven't heard of an upgrade code as yet. But you can use the toshiba dvd code 0503, and the advanced codes in this
thread. To map those codes to a key on the 9960:
1. press DVD
2. press and hold SETUP for two blinks
3. press OTHER
4. enter 9-9-4
5. press DVD
6. press SETUP for one blink
7. enter the advanced code
8. pick a key