[Teardown][BK7231N] Tuya Wi-Fi+RF Curtain Module - Compatibility with Rocker Switches

Hello,
this is my second post here, so please be gentle...()

I bought this device on AliExpress - as my second post here.
It is a (single) controller for shutters, curtains etc.
Data as found:
- Wifi on Tuya plus RF receiver on 433MHz
- Remote control in Scope of supply
- Brand: NoName (not found)
- Product-Name: Wi-Fi+RF Curtain Module
- SoC: CB2S (BK7231N)
- 2x relays of 10A

Disassembly is quite easy from rear side with small screwdriver - self explanatory.
Here I removed the stacked PCBs to see/show the SOC itself.




Now to my request: similar as in my earlier post .
The wall switch I have is a rocker switch with mechanical interlock and TRI-stable status (UP/OPEN - STOP - DOWN/CLOSE). The motor has two end-switches integrated. When the wall switch is pressed, the motor will run until end switch cut out - but wall switch can remain pushed. Sorry, find it hard to explain...

Like that, I don't have buttons for up/(stop/)down, but steady/stable switches instead.

Now, the 'smart' controller expects a button function in the wall switch and does not understand the wall switch rocker function.
Problem: When I press UP or DOWN on the wall switch, controller waits for me to press STOP first, then starts the motor.
This has a low WAF...

I am wondering, if there is a way to solve this within TUYA firmware - would be sufficient for me as IObroker already can control it.
Or should I flash the CBU / BK7231N to openBK to solve this problem, which I did not do by now - I only flashed some ESPs to Tasmota.
Or should I replace the CBU with a ESP32-C3 with Tasmota.

Anyone with shutter experience around?

Many thanks!!

BR Marcus