Prime 4+ Earliest Firmware Version

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What is the earliest firmware version available for the Prime 4+?

I was attempting to downgrade to 3.0.1 as it was brought to my attention that that firmware version has a critical feature: Sweep FX in Headphones CUE (ref: SWEEP FX doesn't effect any longer in the Headphones when Prelistening after migration to v 3.1.0 )

I see that Denon provides early releases on their download page (Thank you), but the earliest I see for Prime 4+ is 3.1.0, which is the firmware version I am trying to avoid. ( Desktop and OS Downloads + Manuals | Engine DJ )

Does this mean that 3.1.0 is the earliest version for Prime 4+, or does this mean the Prime 4+ 3.0.1 version is just missing from the downloads page?

2

Yes, that’s the earliest version of firmware for that device. It wasn’t released with an earlier build so won’t be compatible.

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