1. Hit the reset button(don't need to hold it down for any specified time). 2. As soon as you let go, hold both the menu and map keys.
3. Very soon you will see a blue screen with the words "Please press reset key again" -DON'T press the reset key!
4. If you push the menu or map up/down, left/right you will see dots appear on the bottom.
After a few combinations, you will see"Pass Key Failed. Retry Again!!"
To me this indicates it is waiting for the button sequence to reveal a service menu.
I tried a bunch of combos, but was not ablle to get in. Wish I had pictures, but knowing the members here, someone will not only post them, but the correct code as well.
Cheers!