Actually, the FIQ's have a lot to do with the presence of a Tuner module.. I'm not that familiar with all of this, but my understanding is that without a Tuner they are less common (or not at all)? And the v2 betas began not long after Tuner modules began shipping, so there wasn't a lot of overlap time with v1.03 and Tuners (and FIQs?).

And without FIQs, the bug I'm looking at won't occur.

So.. what are FIQs used for, anyway?