I have a Meridian HD621 and LG C9 and previously gave feedback that with FW0.56 only a Panasonic UB820 was able to pass 5.1 LPCM using EARC to the 621 and that an Xbox One X, PS4 Pro and Windows 10 PC with Nvidia 2080Ti were not.Vertex2 - FW0.57
This update is NOT mandatory.
Anyone willing to update and provide feedback is welcome.
######### What's new on FW 0.57 #########
1. eARC compatibility improvements, especially for Arcana.
2. LG displays eARC fix.
Make sure to refresh your browser (CTRL + F5) or clear your internet cache after update.
Download link: https://hdfury.com/tools/Vertex2_FW_57.zip
I'm happy to report that with FW0.57 all of the above can pass 5.1 LPCM to the 621 using EARC so thank you very much for working round the LG C9 LPCM issues.
The only issue I have now is that the HD621 only supports LPCM and basic DD & DTS and the C9 built-in apps appear to send only DD+ over EARC. Is there any way to limit the C9 to only use LPCM and basic DD & DTS over EARC (perhaps using a custom EARC CDS string)?
If I use optical out the C9 passes basic DD from the built-in apps so it is capable of extracting/selecting basic DD. Switching between optical and EARC in the C9 sound menu is a little tricky for the rest of my family and I find that the Panasonic UB820 needs a power cycle if it was switched on while the C9 was set to optical and then changed to EARC before the 5.1 LPCM works properly.
Great progress though and I appreciate my remaining issue may be totally outwith your control.