Nedis is really quite closed with information about their products.
They try to built their own eco-system and then lock you in it when you buy one of their devices.
Some have found a way to reflash a few plugs with tuya firmware, but often that just means it can be added as a cloud pulling device, which is the worst kind.
You can see a previous thread here, but it will probably be try and error with lots of tinkering.
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