Designed for 36V nominal lithium-ion battery packs (42V peak charge) 6.5-inch, 8-inch, and 10-inch electric hub motors Microcontroller Base
The pinouts for the SWD (Serial Wire Debug) interface on the 4.2 B version can differ from previous generations, leading to connection timeouts. 3. Hacking and Firmware Customization ys-sxt-v4.2 b
If you provide more context about what "ys-sxt-v4.2 b" is, I could give you a more specific guide or instructions tailored to your needs. Designed for 36V nominal lithium-ion battery packs (42V