First build issue.

I just built a 3.5-inch 4S quad with a SpeedyBee F405 mini and T-Motor P1604 KV3800. I had problems updating the firmw4re, which I fixed using STM32CubeProgrammer. Afterw4rd, I had no OSD and no option to flash it; I managed to fix that using desktop softw4re instead of Chrome. Now, the problem is that I cannot configure the motor rotation or placement in Betaflight because they won't spin. They do spin if I plug in the battery and arm the quad. Does anyone have a solution for that? With all these problems, I'm just thinking of getting a new stack. What do you guys think? Thank you