Samsung GT-S7562: Network Goes off I have Samsung GT-S7562. I did update the handset with KyleOPEN custom ROM. Was not satisfied with the custom ROM so again ported back to Original ROM. 

I updated the ROM + Kernel using Odin tool. After I update, the network goes off suddenly. I have re-register with the service provider to gain the network back. This happened thrice.

Also, is there Cyanogenmod or any other custom ROM (Apart from KyleOPEN)for this handset. 

Any suggestion will be helpful.

Thanks.
you've lost the efs file that contains the serial number