Hi Simon
My Model is 49UB850T - DA
Location is Taiwan
current Version is 05.05.45
Problem is that, ever since it updated, its slow as ****, Even some function that used to be awsome are gone, the change input key on my remote won' t even work with the TV anymore, its been a headack, Please help me out and sort out ways to downgrade this TV, then i shall try updated each version by USB to test out which works the best with me.
Thank you so much for helping out!