So, there is a new v30 firmware for N82, which (temporarily, I hope) prevents s60 hack. Some people reported that unlock works if phone is hacked on old firmware (v20) before upgrade to v30, so I decided to go ahead and unlock my handset. Well, it worked, and as a byproduct of unlock, I was able to try modified Nokia maps and try it in navigation mode. Not bad. It is not TomTom yet, but close.