Since this is a split-board system, the communication cable between the 'A' and 'B' boards is a common point of failure.
To help you better, please clarify:
The "b" usually denotes a specific hardware revision or a beta/branch fix (often related to the MCU Microcontroller Unit updates). ys-sxt-v4.2 b
Here's a basic template you could use:
is compatible with their hardware, as different boards require different pin configurations [20, 28]. technical pinouts to flash new firmware, or are you trying to troubleshoot a specific error with the board? Since this is a split-board system, the communication