Not able to change authentication type in beetel 450 tc1

[rprathin]

I have beetel 450Tc1 and i am using it with my bsnl. In that everything i configured but the wireless authentication type is locked. I searched the forum from which i found that i need to downgrade the firmware from TM4-0Q-025 to TM4-0Q-020. The problem is that i am not able to get the firmware. Only new is available.
If any one who has could upload the old firmware it would be very good for me.

 

[avinashsuval]

I have beetel 450Tc1 and i am using it with my bsnl. In that everything i configured but the wireless authentication type is locked. I searched the forum from which i found that i need to downgrade the firmware from TM4-0Q-025 to TM4-0Q-020. The problem is that i am not able to get the firmware. Only new is available.
If any one who has could upload the old firmware it would be very good for me.

here it is https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CDIQFjAB&url=http%3A%2F%2Fwww.link-removed.com%2Frar%2FMwdKtIID%2FTM4-0Q-020_20100628.html%3Flocale%3Den&ei=s3x7U6mYLc6F8gW7woGYCQ&usg=AFQjCNFdDu9dyDHuJZp5y9DZrIwmLyluLQ&sig2=KPrdVlJ4sYIcJ8-3UF-lbA