Please share more details about your problem.
In the past, the system could be started by using the etcher burning system, but now it can’t be started. After sales, the system was started by using the SDK burning system. Why is this so
Try to reflash the sdcard again and plug into that device, I think that should be working again.
This is a explanation for the difference between etcher and sdkmanager I wrote for other users recently.
Well, thank you