My tv is 1920x1080. I have tried all video resolutions and the effect is the same. I am convinced this is a graphic not a fault. However, I don't see lines above the info box so that is probably a fault.
I've upgraded mine and I would say it is well worth doing.
I have previously tried several different versions of official 4000 software on my box and when downgrading a problem sometimes was no remote response. This required a power reset and sometimes a default reset to restore operation...