Radios in mobile devices have firmware that may occasionally need updating.
To update the radio firmware on an Android device:
- Download the Radio zip file
- Rename it to update.zip
- Copy the file to the root of your phone’s SD card
- Turn off the phone
- Start the phone up in Recovery mode by holding Home and pressing Power
- Press Alt+S to apply the update
- Press Home+Back to reboot the phone once the update is complete.
- Confirm update has been applied by going to Menu > Settings > About Phone.
To update the radio firmware on an iOS device:
- Download the firmware (IPSW file)
- Connect the phone to iTunes. Hold down the Option (Mac) or Shift key (Windows) and select your phone.
- Click the update or restore button, select the IPSW file and click Choose.