If you are experiencing an issue with your bmw icom next device where the COMM light flashes green and the LAN light flashes briefly before turning off, please refer to the following step-by-step guide: Step by step troubleshooting guide.

Issue Summary

After successfully using your ICOM Next device and downgrading the firmware, the device stops responding. The COMM light continues to flash green, the LAN light comes on briefly, and no other lights come on. The device cannot be found by iTool Radar and cannot be pinged via the normal IP address.

Troubleshooting Steps

1. Initial Checks

• Check Connections: Make sure all cables are securely connected. Check for visible damage to the cables or connectors.
• Multiple Vehicles: Test the device on multiple vehicles to rule out an issue only affecting the OBD port on one vehicle.

2. Network Configuration

• Firewall and Antivirus: Make sure your firewall is turned off and your connection is not blocked by antivirus software.
• Network cable: Test the network cable with another ICOM device to make sure it’s working properly.

3. Firmware downgrade

• If the problem occurs after a firmware downgrade, the downgrade may have caused the problem. Prepare to reflash the firmware using a USB stick as described in ICOM Next Node. Refer to your device’s manual for detailed instructions.

4. Hardware Reset

• Perform a hardware reset on the ICOM Next device. Refer to the ICOM Next documentation or forums such as cartechnology.co.uk for the correct procedure to perform a hardware reset with a valid binary.

5. Replace the OBD cable

• Swap the OBD cable with the cable from a replacement ICOM device to rule out a defective cable.

6. Status Light Reference

• Understanding what the status lights indicate can help you diagnose problems. Normal:
• COMM light flashes green: Indicates that communication was attempted but the connection was unsuccessful.
• LAN light momentarily illuminates: Could indicate that the initial network handshake failed.

Plan of Action

1. Reconnect and Retry: Check all connections and try reconnecting the ICOM next to the vehicle and the network.
2. Reflash Firmware: Re-flash the firmware using a USB stick. Make sure the firmware version is correct and follow the flashing instructions.
3. Replace OBD cable: Replace the OBD cable and test again.
4. Consult documentation and forums: Refer to your ICOM Next manual and online forums for detailed instructions on resetting the hardware and interpreting the status lights.

Following these steps should enable you to identify and resolve the issue with your ICOM Next device. If the issue persists, seeking assistance from BMW technical support or specialized forums may provide more information.