So according to that documentation - the most up to date firmware for the E3D420VX is 2.17 (rolled out 1/11/12). How to some others have different versions and do they have the same model TV?
I'm having an issue where neither of my Rear HDMI inputs (1 or 2) are working any longer. I used to have a HD Directv receiver hooked up, and seems like the same time the HDMI on the TV stopped working, so did the HDMI out on the Directv box. I have tried different cables with no luck. The HDMI side (3) still works for my PS4 and Apple TV, though I am not getting a HDMI signal from the Directv box.
I assume a firmware update wouldn't resolve the issue, I have tried to restore factory settings, the hold power button for 30 secs while unplugged, and nothing seems to work. Think I am SOL with those two, or is there something else I could check?