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Hi Gamerman72, Thank you for your inquiry! There is much confusion about the HDMI versions and concerns about compatibility. For this reason, we do not promote the HDMI versions incorporated on many of our products. Instead, we advertise the features of a product that are associated with a particular HDMI version. The only HDMI 2.1 feature supported by this model is eARC. For expanded features like 4K 120hz, VRR and ALLM, we apologize but there's no plan to have these added via future software update you may want to check our X900H, and X85J series the 4k 120hz is available after a software update on the X900H and there are plans to add the VRR and ALLM features in future updates. The X85J supports 4k 120 ALLM and there are plans to add VRR in future updates. You may also check our article https://www.sony.com/electronics/support/articles/00246472 for more information. I hope this helps! -Carl
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