Thank you for your support of our products. You can first look at what time the product was purchased, if it was purchased at the end of 22 to recently, you can not need to update the firmware. If it is earlier time, you may need to update. The update method is currently being iterated by us, such as the current Jlink and future UARTs, etc. We will be releasing the update method for UART this week, so stay tuned.