Firmware update causing RAAT handshake issues on Eversolo DMP A6 (ref#DYYW94)

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Hi! What’s not quite right with Roon?

· None of the above quite fits

None of the above quite fits

· None of these quite match

Tell us what's going on

· I updated the firmware to both of my DMP A6 the other day. I now suspect a RAAT registration/handshake regression in the current Eversolo DMP-A6 firmware.

Tell us about your home network

· Araknis Router AN-310-RT-4L2W
An Araknis WiFi AN-700-AP-I-AC.
One DMP A6 is hard wired with dedicated IP address, the other is wifi.

Additional Information

  • Hardware
    • Two Eversolo DMP-A6 units
    • Other endpoints on the same Core: OPPO UDP-203, Marantz AV7705
  • Core
    • Roon Server running on macOS (Mac mini)
    • Network otherwise stable
  • What’s happening
    • After updating firmware on both DMP-A6 units, they no longer stay visible as Roon Ready endpoints.
    • In Settings → Audio, a DMP-A6 may briefly appear with no name, then disappear within a second.
    • The endpoint never becomes stable or enable-able.
    • This happens even when powering up one DMP-A6 at a time.
  • What still works
    • Both DMP-A6 units appear and function normally as AirPlay targets.
    • Other RAAT endpoints (OPPO UDP-203, Marantz AV7705) work normally and reliably.
    • Confirms network, multicast, and Core are functioning.
  • Earlier behavior (before full power cycle)
    • Prior to power cycling, both DMP-A6 units would sometimes show as “playing” (animated bars in zone selector) but controls were unresponsive.
    • Disabling and re-enabling the zone immediately restored playback.
    • Restarting the Core also resolved it temporarily.
  • Logs
    • RAATServer logs show repeated RAAT session timeouts (~10s) followed by session destruction.
    • Endpoint appears to advertise itself but fails during RAAT capability/handshake phase.
    • Core believes playback/session exists, but endpoint does not complete registration.
  • What’s been ruled out
    • Pi-hole (disabled for testing)
    • Network issues (other RAAT endpoints stable, AirPlay works)
    • macOS firewall / permissions
    • Roon database corruption
    • Control point issues
  • Conclusion
    • Strongly appears to be a RAAT registration/handshake regression in the current Eversolo DMP-A6 firmware .
    • Endpoint advertises but fails to complete RAAT initialization, resulting in unnamed “flash then disappear” behavior.
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4 posts were merged into an existing topic: Playback Failing to Initialize After Update to 2.58 [Roon Investigating]