Troubleshooting NMI Errors on zappi Devices
What is happening?
myenergi has observed an increase in NMI-related error messages on zappi devices. Analysis indicates that this issue primarily affects devices with older firmware that were not successfully updated to Version 5.
Important: This is exclusively a firmware issue – not a security vulnerability or cyber attack. Some affected devices were never online, confirming the error is not cloud or network-based. In many cases, the current firmware is already stored locally on the device but has not been installed. The update can be manually initiated in a few simple steps.
What you need:
- Access to the zappi unit
- Safe access to the fuse box to interrupt power supply
- Optional: a second person to coordinate the restart and button press
Performing a Manual Firmware Update:
- Make the zappi powerless: Turn off the zappi via the fuse box.
- Turn it back on.
- Immediately after, press and hold the "+" button on the front of the unit.
- Keep the button pressed until a prompt appears on the display asking you to release it. This will load the Bootloader Menu.
- Navigate to "Download Latest FW" using the "+" button.
- Press the "+" button again to start the firmware update.
- After a successful update, the zappi will restart, and the NMI error should be resolved.
Still having problems?
If the update fails or the unit does not respond in Bootloader mode, please contact our Support Team at: info.de@myenergi.com
Please provide the following information:
- The serial number of your zappi
- A brief description of what happened during the update attempt
- Please include the following hashtag in your ticket: #589561
If your zappi was never connected to the internet:
In this case, the device may not have current firmware stored, meaning the steps above may not function. Please contact our Technical Support Team in this situation – we will guide you through the next steps. If the firmware cannot be installed locally, a replacement unit may be required.
