Thank you for your question.
FMB920 is compatible with BLE sensors like BlueCoin T sensor from 03.25.14.Rev.03 firmware version. If you want to use FMB920 with your mentioned sensor, you need to use 03.25.14.Rev.03 or higher version.
We would like to inform you that we do not share firmware files/updater and other files in the community forum. If you need to receive firmware files, updater and documentation on devices, please contact your Sales Manager.
If you don't have any contacts with our Sale managers, please contact them on our official website https://teltonika-iot-group.com/
and click on "Contact Us" button. When you will click, please fill the form and submit it.
Note: as a topic, please choose "Vehicle telematics".