As i wrote i can connect laptop directly to modem without restarting it and use Internet immediately. Router sees connection to ISP side(green Globus, green connection on Home page, IP address, etc., but it doesn't route packets between LAN and WAN. Ironic, internal configuration page can be accessed via both methods: LAN and WiFi - so i assume that settings and configuration are in place.
Router already has 2.02 firmware - it is possible that reflashing changes something?