Applicable Product: Nyquist E7000, and Nyquist C4000
Applicable Releases: Nyquist E7000 10.0.0:575 / 10.0.1:575 and Nyquist C4000 7.0.0:535 / 7.0.1:535
Fixed in Releases: Nyquist E7000 11.0.0, Nyquist C4000 11.0.0 and higher
Firmware File Name: NyqUpdate-5.1.6.tar.gz

How to apply updated firmware: Use "Firmware" view of the Nyquist web interface.

This new Nyquist appliance firmware version (NyqUpdate-5.1.6.tar.gz) provides the following fixes:

[NYQ-7256] Fixed an issue where Sound Masking does not function properly on 2-Channel amplifiers configured in bridge mode.
[NYQ-7691] Critical security fix.
[NYQ-7708] Fixed NQ-S1810WT-G2/G3, NQ-S1810CT-T1, NQ-EDP01, NQ-S1810WBC restart after hanging up intercom call when multicast was in progress.
[NYQ-7687] Fixed issue on NQ-GA10P and NQ-GA10PV devices that may cause these appliances to not play bells, tones or pages after an intercom call.
[NYQ-7924] Fixed issue on NQ-GA400P where sigle channel with audio distribution fails All-Call.