I have a nanopc-t4 and have been trying the various images referenced in this thread without success. The best for me has been Joern-p's image, but for me that image doesn't have working audio over the headphone jack. The same is true for me with the LibreElec nightly with the correct dtb. The friendlyarm image has audio through the headphone jack, so I know my hardware is working.
Is anyone using the headphone jack, and if so, which image have you gotten to work?