4k compatibility is not yet fixed (there is only Audio, but no video), you need to use the OpenBH or OpenATV, or PurE2, these have 4k working. For now OpenPLi has only up to HD. That's one of the things we need to fix... still on hold.

TS
_________________________
DM8000, DM800se, DM500HD, DM800HD, DM7025, DM7020s, DM7000, DM500s
VU+ Solo, VU+ Uno, VU+ Duo, Kathrein UFS910
Tivusat, TNTSat, Fransat, SSR/TSR, BBC1-2-3/ITV
DE-OpenBlackHole 1.4 image : http://www.openblackhole.com/