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MiX 4000 Firmware Release - 5.16.9

Marisa Potgieter
  • Updated

Warning: Please check with your corresponding RSO first before upgrading to a new firmware version.

Firmware version 5.16.9 introduces key feature enhancements, security improvements, and critical bug fixes.

New features and enhancements

  • Introduced speed dip detection.

  • Implemented advanced Bluetooth security, including readout protection and OTA downgrade protection.

  • Included additional event logging to simplify BLE troubleshooting and diagnostics.

  • Introduced CAN/Config event script execution limits to prevent unexpected device resets.

  • Added periodic internal flash integrity checks to enhance data reliability and system health.

The following issues have been addressed

  • Improved accelerometer orientation accuracy and improved auto calibration reliability.

  • Fixed an issue where VIN requests could trigger “Check Engine” lights on Scania trucks.

  • Improved Bluetooth communication handling, including connection stability on Android 15 devices and iOS versions 15,16,17.

  • Fixed an issue where trips restarted unexpectedly after a device reboot.

  • Corrected an error that caused inaccurate Renault Kangoo battery readings.

  • Fixed a SIM card lockup problem caused by incorrect IMEI/IMSI parsing.

  • Improved CAN communication reliability, preventing message queue lockups and missed readings.

  • Fixed a battery temperature recovery issue where charging did not resume correctly after overheating.

  • Prevented device resets caused by corrupted RF messages.

  • Corrected frequency input recording issue after power-down exit.

Compatibility notice

  • Firmware version 5.16.9 is not ELD-compatible, firmware uploads of 5.16.9 will be blocked for ELD identified devices.

  • ELD customers must remain on version 5.10.23, which includes the latest compliant features and necessary fixes for ELD operation.

Important: Once updated to firmware version 5.16.9, devices cannot be downgraded to any version earlier than 5.10.14. Downgrades will only be possible to version 5.10.14 or later.

Update recommendations

  • It is recommended that all relevant MiX 4000 devices be upgraded over the air (OTA) to version 5.16.9 to benefit from the latest stability and security improvements.

  • Any stock or pipeline units should be upgraded via serial upgrader before installation or OTA after deployment.

Supported firmware versions are:

  • 5.16.9

  • 5.10.23

  • 5.10.14

  • 5.8.16

![​pdf icon](Attachments/PDF.png) Download the internal release notes.

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