a little googling found a copy of BC-Convert, and so I've uploaded it here. I hope the original author doesn't mind, since this has been done without his permission. I'm sure if he/she becomes aware of it and doesn't like it they can get in touch. Further information regarding it here: http://sequencer.de/synth/index.php/BC-Convert I've been using a hex editor to edit the sysex, but perhaps this way will be clearer and easier.
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BC-Convert
2007-05-04 by stutterbrain