some post says PID-33. But you should try using FID WITHOUT PID for the first try, because only a portion of mobile phone require PID.

And don't worry if you find unlocked map generated with gmaptool is 200+ Mb less in size. The loss is believed to be photo-quality QSI, which could be displayed on hi-end Garmin PNAs only. @ the meantime, non-qsi map contributes a lots to performance.