Cannot Open 192.168.1.1 After Firmware Updation

#1
Dear Friends, I am using BSNL broadband. My modem is Aztech DSL605ew. My Wifi became too slow. So i got a suggestion to update my modem's firmware. So I updated it yesterday. After that I cannot use internet at all. I can't open 192.168.1.1. What can I do to set my internet connection. Please help me.