Hi,
I have an Android G809 J22 PC Stick and it has no sound. I have managed to get a .img file of newer firmware and it still does not work. I think I found a solution by editing certain files.
drivers/video/rockchip/hdmi/rk_hdmi.h
drivers/video/rockchip/hdmi/hdmi_edid.c
There are a few others as well, but I do not know how to get those files to edit.
I have Android Kitchen up and running, but I do not even know if that is on the right track or not.
Where to start would be appreciated, thanks.