Basically since you said you do not see firmware updates available on the support page for it, that probably means they discontinued the support for the product. Why not just go buy the DeathAdder V3 HyperSpeed which is lightyears better on the internal parts and is fully supported by Razer, that is what I would do honestly.

When a successor to the previous version of the product is out and released, typically the support for the older ones dont stay around for much longer after the successor’s release time.

Thank you for the response.

But if you notice its introduced 2021. Other mice same year 2021 still are present with firmware updates. Only this one is missing among all (new and old).