I've set IP of LAN interface 192.168.1.2 /255.255.255.0 mask (no Gateway set) and trying to connect to it by web-browser by address 192.168.1.1, but it is not available

BUT: address 192.168.1.1 is pinged and I CAN ENTER it by PuTTY (root/password).
1. How can I enter the web-interface of the router?
SOLVED: The cause is NOD32/ESS's HTTP-scanning module!
2. If I have to reflash it, then how can I do it?
SOLVED.
3. And how can I reflash it back to factory firmware, is it possible
SOLVED. UPD. All Issues solved. Thank you very much!