HTC Touch Diamond (CDMA)

Im talking about the original touch. No 3D Crap, just simple and faster digital clock theme. If its possible to revert it back to the original touch, I would really apreciate it. I miss the contact cube so bad. So much easier and faster.

I'm even thinking of updating my pro with the 6.1 ROM update for original touch. Would this work?

Thanks for any info.