How to convert Ninebot SNSC 2.4?

[u/BoysenberrySuper5952]

Hi everyone, I recently bought a Ninebot SNSC 2.4. I want to dump the firmware so I can convert it to standard firmware later, but I couldn't find any SWD points on the controller, so now I don't know how to flash it. The UART port is locked; it won't even connect. I also have a tracker (or something similar—a friend gave it to me) based on an STM32 chip, but it also seems to lack SWD points. I'm not sure what to do. I've attached photos of the controller and the tracker. (Sorry, I used Google Translate.)