I just flashed the firmware using Xloader, and connected the official GUI to the promini, it seems the firmware was succesfully flashed but I see I2C errors as I did not connect the MCU6050 sensor, any ideea if I can find out what pins are used for the sensor by decompiling the hex file ? I searched about decompiling but it seems it can't be done .. or it's not very easy.
Now I'm trying to look on the traces on PCB to identify the pin used for SCL and SDA ...