Obtain Firmware Version
Currently, there are two ways to obtain the firmware version information of FSC-BT936B, as following:
FeasyBlue App
After establishing a BLE connection between the FeasyBlue App and the FSC-BT936B modules, check the firmware version information on the Configuration function page.
The profile of the Bluetooth module needs to enable the BLE (GATT) function

AT Command
Send the AT+VER command through UART to obtain firmware version information.
Send: <<AT+VER
Response: >>+VER=BT936,V4.6.5 //Example, please refer to the actual reading result
Response: >>OK