New firmware v2.1.30 version for ZIDOO X20 released

hey thanks for the info sussexmat, i will give that a go, but i don't think it will be that, as i always buy good quality cable for all my HiFi gear. i know handshake and ARC can be bit of a twat at times, i just think its that the x20 cant detect the amp and tv as they are off so it reduces the resolution down to 1080p, but i hope your right! as its quite annoying keep having to adjust the resolution, i never had to do this with my Popcorn Hour A500. You can see it stays at 1080p on the front display of the x20 and doesn't change to 4k.
i will let you know how it goes

 

Just tried that HDMI that comes with the x20 as I suspected it’s just the same

 

I always turn on the AV receiver and change the TV input before I turn on the X20.

No problem at all.