I confirm that 008 version of kszaq works perfectly from SD on my MINIM8S II (8GB ROM with 2GB RAM) . It has hevc 10bit hardware acceleration, something i was trying to fix long time as the initial firmware doesn't support it although S905X supports it. Wifi works, everything works, even the remote control works quite well. The remote control can even turn the device off and on.
The only thing I can't make it work is audio via Optical toslink output. On settings i see 2 hdmi and 1 Bluetooth outputs. I've tried them but couldn't make the Spdif work. I haven't tried passthrough. If it works i can get audio via my tv's toslink.
Also CEC i think worked but now it's dead.
Thanks a lot kszaq for the good work. I hope you can fix also toslink and CEC.
I also own a Mini M8S II (2G/8G, I loan it to my friend last Friday to test with his new 4K TV though). Optical output or SPDIF has been working from the very early days. Once you select HDMI audio output on System Settings menu, audio will output through SPDIF at the same time. Of course, I only connect the optical output to my AV receiver. You said 'I can get audio via my tv's toslink', it might be some misunderstanding. TV's toslink is only for optical audio output, not for audio input, at least in North America. TV Audio input always comes from HDMI, and then output the audio signal to your AV receiver via toslink.
For 'passthrough', it means your Mini M8S II will not process (or doing any conversion) on the audio track(s) and pass it out to your AV receiver through HDMI or SPDIF.
As for CEC, I found it works flawlessly (except suspend) with all my TVs since 005 or even before that (2 Toshiba, 1 Panansonic and 1 LG). Usually you need to turn this feature of your TV on first, then it will recognize how many devices connected to the TV are using CEC.