I wonder if the waveforms are different between the original v1 display and the v2? Maybe trying to drive a non-vizplex screen with vizplex waveforms doesn't work well?
That's just speculation though, I have no idea if that even makes sense. I don't think there's any difference in the firmware, but maybe it detects which device you have and thinks it's using the right waveforms for the screen you're supposed to have.
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