I think there will be a picture settings in Source/select mode selections likes of HDMI1,HDMI 2 and others separately...Yes if u want to change the picture settings of Home page then u have to use the secret menu code/service code..There should be picture,sound and HDMI setting too in other modes..On Vu 4K Tvs there is no option in TV settings to enable HDMI 2.0 or Higher Quality option. ALso no option of HDR in TV settings, however the TV does support HDR as i can see the same in Hotstar picture/display settings and its mentioned on the TV outer Box
But I can't say exactly how ur TV brand have these settings...
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