Each EcuTek Vehicle Interface (EVI) has its own boot firmware, main firmware and Bluetooth chip firmware, which we recommend that you always update to the latest version.
The best way to update the EVI firmware is to use ProECU, and this can be used to update both the Bluetooth and non-Bluetooth interfaces.
In ProECU, go to the Options menu and select Vehicle Interface Firmware Update to begin the process of updating the firmware. For further step-by-step instructions, see this article on our knowledge base.
Standalone EVI Updater
If it is not possible to update the firmware via ProECU or the ECU Connect App, you can use the EVI Updater tool. This tool performs the same process as ProECU but does not require ProECU to be installed.
After downloading the EVI Updater tool, plug in your EVI cable, and run the tool. Select the Update option to begin updating your cable firmware.