Better documentation?

[riz94107]

I've just got a KC868-A6 purchased via Aliexpress - I was expecting things to "just work", but since they're not, is there better documentation anywhere?

Here's what I've tried:

- the unit boots (and cycles the relays) when 12V is applied
- What little documentation I've seen says it should be in AP mode - but no APs show up in my local wifi at all (even after pressing buttons for >10s as indicated)
- the USB-C port does not seem to work, or at least it's not detected when I plug it into my computer (neither MacOS nor Linux).  I would expect to be able to load ESP32 code via USB, but... no
- plugging in an s1306 display doesn't yield any info (the display remains dark, probably not supported in the loaded firmware)
- the RS232 port does have some activity.  I see this:

Code:

**********
T1: -0.06
         T2: -0.06
                  2022/11/28 (Monday) 11:30:52

... and when I press the S2 button, I get this:

Code:

Download key is ok !

How am I supposed to be able to get ESPHome on this thing?   (I am pretty familiar with ESP32 and ESPHome - it's not clear which serial port is supposed to work for this).

Thanks.