What is blz file? how to install to N6600?

blz files are cracked files of the n-gage games which they crack and can be playable on 6600 .... i think thatz only can be said coz this site doesnt allow info on cracking and warez.

Indeed. Blz files are cracked (illegal) versions of n-gage games which can be played on other Series 60 devices.

As they are illegal, please do not discuss them here - thread closed.