Is there anyone working on OpenWRT for the Netgear Orbi RBR850? I also have an unused set of the prior edition (can't recall the moniker).
I read that these units actually run a heavily modified version of OpenWRT (is that correct?).
I've observed that Netgear seems to move quickly from model-to-model, as does their active development (it seems), so having a third-party replacement firmware would be better for advanced consumers I'd think.