Good news. I was able to flash the full 2.3.20 SBF earlier today to my R2D2.
I just followed the instructions for the SBF I found at My Droid World.
It's now a D2.
Full SBF and instructions. Doesn't mention R2D2 until last post on page 10.
TBH & MyDroidWorld Present: Droid 2 (2.3.20) Triple Threat
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