Yea, the Tinker Board 1 maintainer has said he has had some issues bringing the image for Tinker Board 2 up to the same quality. Something about the voltage regulators?
I say take a break if you're frustrated. I would be helping out with testing if I had my TB 2, but at present it's going to be a few more weeks (or months) before I get my hands on it :(...
I would be interested in this, FWIW...