Enhancements:

The AV UI provides the following enhancements:

Support for new profiles:

DICENTIS Conference system profile
Telos Alliance / Livewire+ AES67

Support for configurable colors on the Audio Technica profile.

Bug Fixes:

This firmware addresses the following bugs:

Fixes the issue where the switch crashes when a large configuration file is loaded and clears the configuration. [MS-4655]
Fixes the issue where a stack of two switches does not deliver power to the connected PDs when stack is rebooted. [MS-4736]
Fixes the issue where switch responds to a DHCP request even though no DHCP pool is created for the subnet. [CE-6246]
Fixes the issue where power is not delivered to the connected PD when “speed auto 100 half-duplex” is configured on the port and the switch has rebooted. [CE-6386]
Fixes the issue where the SNMP OID “LastQuerierAddress” shows an IP address of “0.0.0.0. [CE-6473]
Fixes the issue where the IGMP Operational Mode status (until IP IGMP) displays as off, then on. [CE-6483]

The AV UI addresses the following bug:

Fixes the issue where the MTU reverts to 9198 after reboot. [CE-6514]
Fixes the issue where the PTP TC configuration does not save in the startup configuration of the AV UI. [CE-6481]
Fixes the issue where the AV UI does not restore the configuration with special characters. [CE-6558]

Known Issues:

This AV UI contains the following known issues:

In stacking units, an AV UI profile that is created on the primary management unit does not synchronize to member units. The profile on member units becomes a data profile.

Workaround: Create an AV UI profile separately on each stacking unit.

In the AV UI, you cannot configure the Fanout setting for a standby member of a stack of M4300-96X switches.

Workaround: Use the main UI to configure the Fanout setting.

When you configure the Force Multicast or Block Multicast settings for a LAG in the AV UI, the configuration is successfully applied to the switch, but the Force or Block icons do not display on the LAG port.
When you configure the Force Multicast or Block Multicast settings on one or several ports of a M4300-96X switch in the AV UI, the port status information (such as VLAN profiles, colors, and so on) no longer displays.
Workaround: Refresh the AV UI page.

This firmware contains the following known issues:

After you upgrade the firmware from 12.0.9.x to 12.0.11.x or a newer release, when you use the main UI and you select Routing > Multicast > Mroute Static-Multicast Configuration, the page does not display automatically.
Workaround: After the firmware upgrade, clear your browser cache.

Warnings:

Read and follow these warnings before updating your firmware:

For user passwords, line passwords, and enable passwords that are encrypted with AES in firmware release 12.0.15.7 or earlier releases, automatic migration is supported to the more secure SHA512 in release 12.0.17.6 or later releases.
User passwords, line passwords, and enable passwords that are encrypted with MD5 (salted) in firmware release 12.0.15.7 or earlier releases are not migrated to release 12.0.17.6 or later releases, so they must be set manually.
SNMPv3 MD5 and SHA-based passwords from firmware release 12.0.15.7 or earlier releases are not migrated to release 12.0.17.6 or later releases, so they must be set manually.
LLDP does not propagate VLAN information

General Information:

The boot code remains at the existing version 1.0.0.18 in this switch firmware.
AppMgr is upgraded to version 1.0.3.26 in this switch firmware.

Download Link: https://www.downloads.netgear.com/files/GDC/M4300/M4300_V12.0.19.12.zip

Firmware Update Instructions:

To update your product’s firmware, follow the instructions in your product’s user manual. To find your user manual, visit https://www.netgear.com/support/, enter your model number in the search box, and click the Documentation button on the product page.