I was thinking about this, and your statement that you had a difficult time makes me wonder if there isn't something else going on. Like maybe you are unintentionally performing the process to get into the Recovery Loader incorrectly.
Like I said in my previous post, I've had one or two weird instances where the image didn't write correctly. However, doing it again always cleared this up.
Maybe you are counting seconds a bit fast? Try holding the reset button down for six seconds instead of four -- there's no harm in holding it longer.
Also, I note that my instructions above say "the recovery system will not load if no ethernet cable is plugged in during boot". I need to correct that. Not only does a cable need to be plugged in, the other side needs to be active, so there needs to be an active ethernet signal on the port. This is a very subtle distinction but an important one. If you were plugging into your PC and the port wasn't actually set up/active yet, that would cause the Recovery Loader to not run.