Yepp your right. NK1 is the latest, but my rom uses the dbt where is NJ1 the latest. But the NG1 works on NJ1 FW too. So i think there is no real modification on samsung side. Beside there is no another update from sources for p605 available. So that means, is there a modification from samsungs side, then only in ramdisk. This is why i changed it to NJ1 one. Maybe there is one who knows.