Yes, there are a couple of options:
The easy one is to throw in some money and buy an HDFury Dr HDMI or VRROOM, then you can easily adjust the EDID via it's web interface (or app). Those devices aren't exactly cheap but I really like my VRROOM and it can do a ton of more stuff as well (I mainly use it to debug issues though).
You can also dump the EDID and then edit it eg with the AW EDID Editor https://www.analogway.com/emea/products/…aw-edid-editor/ - either dump the EDID of the TV and add the additional audio formats of your AVR or dump the EDID of your AVR and fix-up/add the HDR modes of the TV (the former should be easier).
Or you could simply replace the EDID with some default one that about matches your TV/AVR - HDFury has a nice EDID collection on their website https://hdfury.com/tools/HDfury_EDID_collection.zip (most edids are in the "Vertex EDID Tables" folder).
Either way, first ssh in and run getedid create - this will save the current EDID(s) to /storage/.config/firmware/edid/ and install them permanently. It'll print the names of the connected HDMI ports (usually HDMI-A-1) and you should now have edid-HDMI-X-Y.bin (eg edid-HDMI-A-1.bin) files in the .config/firmware/edid folder.
Copy that file over to your PC, edit it and copy it back or just replace it with some generic EDID (make sure you don't change the name!) and then run create-edid-cpio to also update the early-stage EDID file with the one in the .config/firmware/edid folder (repeat that if you need or want to change the edid).
If you later want to completely get rid of the EDID override simply run getedid delete
so long,
Hias