I'm going to try debugging my stupid V3. It's totally busted and keeps on saying 'Reset_param_0invalid' and doing nothing. I'm hoping it fixes my tama.
I've never tried it before but I think what it does is deactivates the 'Time_param' and 'series04_param' on your gotchi The number is different depending on your version. These are the different parameters that are used to control how the tamagotchi behaves. All versions (excluding V5) use the Same general behaviour as a baby with any gender.
When you've debugged it, it puts the 'Time_param' aside so when you push C it goes really fast.
I know this because I was talking to a geeky friend of mine who I gave my old tama. According to him it's using a dumbed down java based system similar to that on the digimon toys. I don't know how true this is, but he had my old V1 wired into this Bus something or other interface card. Now, I don't know how he knows this or anything.
I thought that was an interesting bit of info to share.
NKP