SamyGO

Hi
I've just joined and any help would be appreciated.

I have this TV
www.whathifi.com/samsung/t23b550ex/overview

I'm not sure of the series but I think it might be E, the model is T23B550.

I'm looking to downgrade the firmware to the one that has Amazon prime etc on but not sure on the exact version. Can anyone please help ?

Thanks
Dave