FMB140 FW 03.25.15 Rev:128 - "Not supported" in all Configurator versions

Hello,
I have a problem with FMB140 tracker.
Firmware version: 03.25.15 Rev:128
The device is detected (COM5), but in all versions of Teltonika Configurator I tried (1.6.4_E.fmb14x_dev R.2, 1.6.4 and others) it shows “Not supported” and I cannot connect.
I have external power connected, tried different USB cables and PCs, and also disconnected the internal battery.
Is there an older Configurator version (e.g. 1.6.0, 1.5.6 or similar) that works with Rev:128? Or is there any other way to flash the firmware or reset the device without sending it to service?
Thank you for any help.

Dear @Radim,

Thank you for providing the detailed information regarding the issue.

We understand that the device is detected by the PC, but the Configurator is showing the device as “Not supported” when attempting to connect. To properly investigate this case and provide the correct guidance regarding the supported Configurator version or possible firmware recovery options, further analysis is required.

As this may require access to specific resources and detailed technical verification, we kindly request you to create a ticket through the Partner Portal (VIP Helpdesk) or coordinate with your Teltonika Sales Manager to obtain access.

Once the ticket is created, our technical support team will review the case and assist you further with the available solution.

If you do not have access to the Partner Portal, you can contact our team through the Teltonika GPS Contact Us page:

Thank you for your understanding and cooperation.

Kind regards,
Amalnath