Same for me, i have two WD Purple cards and it doesn't matter if i swap them between the units, the behaviour is still the same for each A129Pro (there must be more factors). EDIT: Btw my sample unit was nice and stable with 1.2ACC as well but then it got mad at me...
But i have something which came to my mind recently. Did anybody, tried to just cool the dashcam? What if the issues are heat related? I may probably sound repetitive by now
but i was investigating my sample unit (and the worse behaving one now) and in order to get to chipset i had to remove the heatsink, faraday shield cover and copper spacer/shim (between each of them is a thermal paste) so obviously i was forced to replace the thermal paste (i used good old Arctic Cooling MX-2) and i think the dashcam behaves calmer, more predictable after the procedure. I will give it some time but looks promising.
Actually, I was up to looking for something like an UART access and there really are four pads for, as it seems, two interfaces...
EDIT: In case someone is interested
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