Well I rather not have seen the thread.  I find it annoying  when someone posts a thread like tim-bc did.
Why bother it only makes us feel a loss.

Now I may never know what MP TEST FIRMWARE can do.

But @ Tim-bc   over the years I have done some dumber things then this.
So if it is any comfort to you maybe one day we will get to know what it was for.
Or as mikeywith said maybe it had very little value any way.