Hello people
Just wondering if some kind people can help me update my firmware on my LG..model. 47LV355u-ZB.AEKYLJG
I have a box that streams films by wireless to my tv, then the box became corrupt and would not work properly, so I took the box
Downstairs to our smart tv, and it worked perfectly without problems like when it was new.
So took it upstairs again no luck on the tv upstairs.....it's driving me mad so any help on firmware update would be most well come.

Many thanks in advance