Help needed to identify my controller

Hello. I received a badly beaten e bike to move the parts to my mtb. This was PAS only when sold. Does anyone have a clue what manufacturer is this controller from?
The text on the case cover is mostly chinese but some numbers tell that this is 36V(operating voltage?) and a lower value 29V(cutoff?). There's also number 15A(max current?) and a separate numbers 12 and 1:1.
I also found out that the number 800U refers to the display, and that is also confirmed by the last owner of the bike to be correct (Bafang C965 -clone).
Also these number series are written:

728U

W250-XTS728U

160971610

2016-1

The PCB contains this(model number?): XT-SIN6SJ10

Pictures: https://imgur.com/a/9FbEq3I

Nevermind the ST-Link V2 attachment on the board. I thought that this could be S06S but I'm not sure.

12 means 12 magnets on the PAS sensor, with a 1:1 pas ratio.
You can use google's translate app to translate pictures taken with the Camera.


IMO if you have the knowhow to reprogram a S06S controller, I would buy one and replace the wire harness from the existing Controller to make it look nice.
Also you'll know your way around the new Controller much better.

Thank you. This might be a bit weird question, but is it common that the pcb looks the same as for example S06S, dimensions of the board are the same, but the internals are totally different? I mean, it seems that I'm on the verge of finding what these clues on the pcb could mean;

XT-SIN6SJ10
=
XT - www.xtcharger.com - seems to be connected to BMSBattery....
SIN - Sine wave - combined to the XT -mark, they actually have the sine controllers at sale.
6S - combined to the SIN -mark, it makes the shortened S06S
But the J10 -part of the mark doesn't tell anything yet...

...so, this is the closest one I'm thinking http://www.xtcharger.com/s-series-250w-500w-torque-simulation-sine-wave-controller-24v-36v-48v_p24.html , but of course the wiring is made by the builder for the whole bike and without the throttle(just PAS). Maybe I try to contact GZR - company for diagram.

So from now, hypotetically; I'm only guessing this controller actually is or is at least closely related to S06S and I want to test it without programming.
Is it possible to turn on the S06S without the ON -button of LCD or LED? The reason I ask is I want to test the motor to know if the wiring to the motor is not damaged. Additionaly is there a way to change PAS-level without the original C965 -clone LCD or some generic LED?

This wiring diagram at the first link below would be my best bet to bypass the display/buttons and try, but in that post the user has Bafang motor, prog.cable and controller. He had already programmed his controller with the Bafang program cable and just removed the display(and the buttons). This diagram(first link) is interesting because I know for sure that my controller is meant to be operated with Bafang C965 -clone(800U). I hope that this wiring, PAS, throttle, the switch and controller programmed with the flexible opensource firmware would be all I need... Hope is everything I have for now
But first, I need to test if the controller talks with the motor properly. I haven't been able to make the motor spin because I have not found a way to strat the controller weithout LCD/LED as mentioned above.

The diagram and inspiration for the no-display setup;
https://electricbike.com/forum/forum/ask-lunacycle/ask-a-question/394-bbshd-without-display?p=20201#post20201

My main harness cable has one more pin for the brakes, and also different colours. Could P+ and PL here correlate to V+ and Vin as it is used in S06S diagram?;
https://www.poweredride.com/info/dump-your-bafang-display-for-stealth-and-better-display-options

Clues for the original LCD wiring at the end of the manual...
https://www.batbike.se/wp-content/uploads/2016/09/Bafang-Display-C965.pdf