USB stick based firmware update

What is this function for?

The USB stick based firmware feature allows preparing a USB stick that contains a firmware update to be applied by the charge controller. The stick is placed into a charge controller. The charge controller detects the update file, applies it and reboots the charge controller to make the changes take effect.

How to use it?

Place password file on USB stick

To ensure that a person with access to the USB port of the charge controller actually is authorized to make configuration changes, the USB stick needs to contain a file named USB_PASSWORD in the root folder that contains either the operator or manufacturer password. If such a file does not exist, no firmware update is applied.

Place sw_update.deb file onto USB stick

In addition the USB stick should a file sw_update.deb in the root folder. This should contain the firmware update that you have received from the manufacturer of the charge controller or charging station.

Please only apply firmware updates that have been approved by the manufacturer of the product that you have purchased. Downgrades are not possible and are rejected by the feature.

Insert stick into charge controller to apply

When the stick is inserted the controller will signal by blinking with all front LEDs that the SW update is detected and about to be installed. After applying the parameter changes the controller will reboot automatically. After the reboot when no further changes can be applied from the stick, the controller will signal that by blinking quickly with the ready LED.

How to disable it?

This parameter allows disabling this feature. If disabled, no sw updates are accepted via USB even if the correct password file is present.