Hi there looks like we are the only few still stuck with pioneers vsx 830. I have a similar issue.
Mine current version 1-282-009-008-193 is already installed when I purchased it in 2017. Apparently there is no update after that.
I hooked it up with PS4 today. I found it only allows 1080i with HDR. Not 4K with HDR. I am sure my PS4 output is 4K with HDR as its perfect when directly hooked PS4 with 4K HDR TV. But not with VSX830 in between.
So it means if you successfully updated to 1-282-009-008-193, the most you will get is 1080i HDR.
Tell me if I had done anything wrong. Thanks.