CobraNet Firmware Version 2.11.13

CobraNet Firmware Version 2.11.13

Download Files

2.11.13 Firmware (ZIP, 395 KB)

Changes since 2.11.12 release

  • Fix a bug in handling private bundles. The bug happens when there are more than 2 private bundles with the same bundle number. It causes the conductor to increase the permission list until it reaches max size, so no more nodes can be add to the network. This version is recommend for any user who uses private bundles, and optional otherwise.


  • 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.


  • 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.