public boolean writePersistentBytes(String key,byte[] value){
  try {
    if (checkService()) {
      return sService.writePersistentBytes(key,value);
    }
  }
 catch (  RemoteException e) {
  }
  return false;
}

public boolean writePersistentBytes ( String key , byte [ ] value ) { try { if ( checkService ( ) ) { return sService . writePersistentBytes ( key , value ) ; } } catch ( RemoteException e ) { } return false ; }
write a byte array to persistent storage , which persists thru factory reset
