Well, I'm not sure what to tell you.

Only the very early upgrades needed a ROM dump. The later ones shipped with it. Assuming you do end up with one that needed a dump, there is still only a 50/50 chance it'll be relegated to R1 only. Even then, I'm sure there is SOME WAY to overwrite the ROM. The nice thing being, if the overwrite is a failure, you didn't lose anything.