@Paveld Nope. Pls contact with your ISP they will solve your problem and first reset your router.

@Paveld If your isp provide static ip then check if you enter right ip, subnet mask, default gateway. If your input is right, then maybe your ISP uses MAC binding, so please contact with your IPS to...

@fozle Use firefox or other browser, in chrome this new firmware is not stable at all.

@Mmahazad | Try to restart after turn on airplane mode then turn on wifi you should find 5ghz option. Try this setting. In vivo S1 in this setting 5ghz detect normally, whinch is official phone in bd.

@Mmahazad You can try this little hack. To connect to 5ghz -> turn on airplane mode then go to wifi setting turn on wifi hopefully you will see 5ghz band then connect to 5ghz then turn off airplane...

After installation, i can not go to the advanced wireless setting option in the setting. Are you facing the same issue?