You debug by doing the steps listed below
Tools: screwdriver(small) tape and a pencil
1.Unscrew the big screw on the back.
2.Unscrew the 4 little ones holding it together.
3.Open up your tama(both sides apart from each other).
4.rub on the small circle thet says De-Bug above it.
5.tape the battery in the spot where it first was.
6.turn your tama over and see if it's working if it isput your tama back together.
7.When the egg hatches you can pick from the characters (even nazotchi) you can hyper-speed by hitting C
Hope I helped!
Warning: if you do this you are riskind breaking your tama
(throwing $15.00 down the drain)