Have you tried using directly the SteelSeries Engine 3?
What I did was to create a new configuration (named "Off"), in which the three sections of the keyboard have the "Effect" -> "Disable Illumination".
Also configured the light bulb as "Off" on the right.
Then, on the other configurations (
Default, Default 2, Default 3, Default 4, Gaming) assigned the
Fn+0 key to load the "
Off" configuration, so doesn't matter in which configuration it is, if I press
Fn+0, it will load the "
Off" configuration.
Iconfigured the
SteelSeries button to loop between all the configurations, so,for example, if it is currently on the
Gaming config and I press the
SteelSeries Button, it will go to
Off, if I press it again to
Default and so on.