Uploading OpenBK7231 Firmware on TW-03/W600 3 Gang WiFi+RF433 Smart Switch: Tips & Tricks

I bought 2 x 3 Gang Smart Wifi RF433 Smart Switch from AliExpress a year ago. It used TW-03 chip, based on Winner Micro W600, I have to desolder to upload OpenBK7231 firmware.

I traced on PCB with multimeters to get some infos but still not enough

JG905R: don't know what this is? Google has no info
no name: still don't know?

This is how I set up after uploading firmware:
PB8: Relay1
PB18: Relay2
PB15: Relay3

PB10: WifiLED 1 RED
PB11: WifiLED_n 1 / BlueLED

PB16: Button 1
PA5: Button 2
PB13: Button 3

Switch runs ok with this config, but sometimes it hangs up when pushing Button 1 On then Off, sometimes it has ghost switch itself, automatic turn on and then turn off.
Any ideas?
Thanks