Our ROM package not including a modem for switchers from gingerbread. So we will share some modems here for you.
If you switched from gingerbread to GamerzROM, you only need to flashing this 1 time. You won't need to flash it again after updating ROM.
- Download a modem and put it to your phone.
- Reboot to recovery.
- Flash (choose file from sdcard) the modem and reboot.