Guys , beware with you jailbroken iphone... change the root pass now, my iphone just infected with that stupid worm.. so i need to restore my iphone, now i already change the root pass...

follow that link to change root password, but first you need to install a program name MobileTerminal from cydia..

then only you can change the root password, by typing su , then continue typing passwd , then enter your new password..

for changing the mobile password, just simply write passwd, and you can change it... ( default pass is alpine)