These are the source code and binary provided to me by Butterfly Labs.
I have not (yet) reviewed or audited the code myself.

12a4f47100f2dc26bd278f0b1d96b62226d666e7de49b5a97e92242dac0504c9  BitForce_SC-1.2.5.hex
44d4100a36e408b8f6d4891897d4487f3e2aec846b945674c7fb7f8f60d517ba  BitForce_SC-1.2.5.tbz2
235d28bb7c10e57a2dfcd90ce4d0572c8ad3e601b1bba205ba5d58a2ee84b897  BitForce_SC-1.2.5.zip