As much as I commend this effort, it is fruitless.

There is no Blackberry Messenger application for any platform other than Blackberry.

You need to get your facts straight, first and foremost. RIM does not license it out nor do they even provide any documentation for using the protocol outside of internal API for ON-DEVICE applications.

If you're talking about a third party application, like WhatsApp - that's different and you need to rename your thread.