Default [Q] Model number renaming (Continuum ROM)

Prior to updating my phone to Froyo, I followed the instructions posted here so Kies recognizes my phone. It did.

Since I upgraded my phone, it doesn't detect it anymore. I suspect it was due to the model name, which was GT-I9000. So I ran the i897_prop to change the model name. It still didn't recognize my phone.

Question:
How do I revert it back to GT-I9000 without re-flashing my phone again?

Thanks