I have listed this problem before and there has been no way to solve it conventionally so I was hoping for some advice on a more unconventional fix?

The problem:
My Bluetooth GPS mouse uses the passcode "NAVMAN" the N800 will not allow entry of anything but numbers so its not possible to pair them.

I have had loads of advice before and I know the normal way is not possible.

It does work with Maemo Mapper, but that uses the mac address instead of the normal way to pair.

What I need help with:
So, what I though was, maybe there is another way to achieve this? Could I pair a mobile phone, then go into the system someware and edit the file where paired devices are stored to the details of my GPS Mouse?
Or if I pair it in Ununtu then get the info I need from there?

There has to be a way without the conventional method of pairing.

I just don't have the knowledge to do this so was hoping for some pointers.