Airtel Xtreme Nokia router

[newstar1999]

I followed a tut on IBF to unlock airtels Nokia g2425g-a router. And I unlocked it. It was working fine. One time I restarted the modem and then it went to a admin page that was not previously there. It's default admin username password not working any more. It's admin page also different now. It's in Spanish. It's saying terminal opticà. Is there anyway to install nokia routers firmware? Model is G2425G-A.
ONT: 3FE48299DEAA firmware

 

[pirated123]

Did you manage to fix it?

 

[newstar1999]

Yes I fixed.. I could enter into the router but couldn't install new router

 

[gaurav0028]

Can I know the tut you used to unlock the router?

 

[harman22]

@newstar1999how to unkock it .plz share in tele