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Hi to all!

We have to connect several bluetooth sensors to one single FMB125 GPS tracker. One of the sensors use custom2, custom3, custom4, custom5 Bluetooth fields. It worked for FMB900 but we cannot find firmware/configurator for FMB125 with bluetooth advanced configuration contained custom2...custom5 fields.

Does FMB125 have custom bluetooth parameters support? And if yes, what firmware/configurator we should use?


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Hello there,

Good day. Thank you for your question.

Yes, FMB125 has this functionality but we do not share the firmware files or updater on the community forum. To receive firmware files, updater, and documentation on devices, please contact your sales manager/distributor. If you don't have any contacts with our sales managers, please contact them on our official website and click on the "Contact Us" button. When you will click, please fill the form and submit it.

Note: as a topic, please choose "Vehicle telematics" or you can send an e-mail with the description of your situation to

Thank you for your understanding.

Kind regards.
Thank you, Vivek. No problem, if you dont share firmware here. Please, just tell proper version of firmware/updater to have custom BT parameters (1-5). Because your distributor doesnt know what version is needed.