CobraNet Firmware Version 2.11.12

CobraNet Firmware Version 2.11.12

Download Files

2.11.12 Firmware (ZIP, 395 KB)

Changes since 2.11.11 release

  • Fixed the changing latency bug for CS4961xx. The CM181xx series remains the same. It is an optional upgrade if you don't need to change latency on CS4961xx.


  • The following CobraNet features are not available on the CS4961xx platform: Audio meters (audioMeter...), loopback (audioLoop...) and duplication (audioDup...) If required, this functionality is easily achieved with DSP Conductor primitives.


  • Latency change in CS4961xx: This bug exists in the firmware before 2.11.12. Modify ModeRateControl for latency doesn’t work for CS4961xx, the error symptoms are unspeced latency and/or distorted audio. CS181xx is not affected.
  • Packet bridge transmission length must be an even multiple of 4. This is a firmware limitation not a hardware limitation. The limitation has been present in all prior CobraNet silicon series firmware releases.
  • In our lab we have observed a condition whereby a conductor on a network with dozens of active bundles may report BEAT_FLOODED errors and operate erratically. This failure is only a possibility for a conductor that is neither transmitting nor receiving network audio. We believe this problem exists in all CobraNet silicon series firmware releases
  • Occasional loss of audio clock lock (approximately 1 per hr) has been observed on large networks with numerous switch hops.
  • Bundle priority does not correctly control transmission ordering. Transmission ordering is unimportant on switched networks and only of marginal importance on a repeater network.
  • Audio transmission may be inhibited when bundle transmitters and receivers are not turned off (by setting bundle assignments to 0) before modeRateControl is modified.
  • TFTP server will not retransmit a lost uploading data block if the client requests it. Read operation will timeout. Read operation can be restarted to recover. The TFTP server has always mishandled this condition.