This is a very strange condition upon which to insist. The issue is whether evolution (which produces only “biological objects”) can produce 500 bits of FI, or whether this can only be produced by “design.” No one is suggesting a third option. So even if you rule out such 3rd options, that does not help resolve the central question in any way.
e.g. If it was demonstrated that the bacteria in the Lenski long-term evolution experiment produced 500 bits of new FI, this would not meet the criteria you are demanding. Yet this would be a clear refutation of your “design” argument.