There is no default password to wipe the handheld.
If a password is set, and you don't know it, just keep entering an incorrect password until the device wipes itself.
I don't understand what you're trying to do.
Is there a password set on the device now?
If you're just looking to wipe the device, there's no need to use a password if there isn't one already set.
Just go to Options > Security Options > General Settings > click menu button > Wipe Handheld
wipe password?
tain 
monkey
