Nick Watermelon You can use the BF501\_Update 240118.exe tool to update, but if the baud rate is different, older devices will need to use the old tool.
Watermelon Nick It's related to the hardware version of the device, and not related to the upgrade tool.
Watermelon Watermelon I apologize for the issue. It was caused by using an external antenna, and the antenna outside was not reconnected after it was removed due to a previous typhoon.