Checa lo que esta en negritas,asi debes tener tu custom
Código:
<?xml version="1.0" encoding="utf-8"?>
<customization>
  <mmi>
    <activity-menu>
      <activity-menu-present>true</activity-menu-present>
      <activity-menu-neweventstyle>true</activity-menu-neweventstyle>
      <action-button-activates>true</action-button-activates>
      <activity-menu-focusoperatortab>true</activity-menu-focusoperatortab>
    </activity-menu>
    <shortcuts>
      <rocker-key>
        <up lock="false">Camera</up>
        <down lock="false">SimApplicationToolkit</down>
        <left lock="false">Phonebook</left>
        <right lock="false">Msg_WriteNew</right>
      </rocker-key>
      <shortcut>BlueTooth_Settings</shortcut>
      <shortcut>MenuItem_SetTemporaryAlarm</shortcut>
      <shortcut>MusicRecognition</shortcut>
      <shortcut>SimApplicationToolkit</shortcut>
      <shortcut>FMRadio</shortcut>
      <shortcut>DemoMode_Id</shortcut>
      <shortcut>Menu_CalendarMain</shortcut>
      <shortcut>MainMenu</shortcut>
    </shortcuts>
  </mmi>
    <flash-desktop>
      <settings reg-path="/apps/flash-desktop">
        <enabled>true</enabled>
      </settings>
    </flash-desktop>
  <mmi>
    <profile id="0">
      <ring-volume>8</ring-volume>
      <key-sound>silent</key-sound>
      <vibrator>on</vibrator>
    </profile>
    <settings>
      <enable-flash-desktop>true</enable-flash-desktop>
    </settings>
  </mmi>
</customization>