VodafoneTV by Sagemcom. How can i upload a basic android tv firmware? Can i?

[sokigergely]

Hey everyone!
I've got this VodafoneTV Box made by Sagemcom from friend. I tried to find some documentation but no luck. It is very popular in France, Spain, New Zealand.
When i turn it on it starts with the setting up, pair your remote, connecting to network...etc but allways stuck on " SA005 contact technical support". Tried to do button pressing combination, but nothing. Only makes an upgrade. But does not go into recovery mode, if it has any.

I was thinking if i could install a clean androidtv firmware but i didnt find any solution for this model.
This is the model:  https://i1.wp.com/witchdoctor.co.nz/wp-content/uploads/2019/10/vodafone-tv-3.jpg?fit=1200%2C727&ssl=1
It has a Broadcom BCM7252 Soc which i found in several other models, which made me think if others can upload other firmware why i cant?
Some more foto: https://imgur.com/gallery/TeB6PKx
Also i found this article: https://www.anquanke.com/post/id/147139 My board looks very similar to it.
So does anyone know more about this product?
Thanks!