New Features:

• Supports new PoE Longer Detection Time option that modifies the PoE port detection process so it can successfully detect certain types of PDs that take longer to respond. For example, you might notice that an attached PD fails to power up and the switch port shows as available.
• Add access control to SSH service. 

Bug Fixes:

• Fixed an issue where SNMP traps contain extra double quotes for the community string.
• Client cannot receive an IP address when using an 802.1Q trunk (GARP) VLAN assigned through a RADIUS server.
• LLDP options for port Admin Status are inverted between “Rx and Tx" and "Disabled".

Security Fixes:

• Fixes security vulnerabilities.

For more information about security vulnerabilities, visit https://www.netgear.com/about/security.

Warnings:

Read and follow these warnings before updating a firmware version prior to 1.0.5.5:

• We recommend against downgrading the firmware image to 1.0.2.2 or earlier version after updating to 1.0.4.4 or later versions.
• Because HTTPS has been disabled by default since v1.0.2.2, the device UI Home page does not display automatically after using HTTPS to upgrade to this firmware version.
  Workaround: Open a new web browser tab and type the switch’s IP address to access the Home page. 
• After HTTPS is enabled manually, accessing device UI via HTTP will be redirected to HTTPS automatically
• Default community string “Private” and “Public” for SNMPv1/v2 are not available in newer firmware.
  Workaround: Set a different community string before updating the firmware.
• Authentication protocol for SNMPv3 automatically changes to “MD5” if the current setting is “None”.
  Workaround: Rest the Authentication protocol to SNMPv3 after upgrade.
• The default setting for the Smart Control Center (SCC) Management option changes from enabled to disabled. Note: The SCC Utility can still discover the switch.

Download Link: https://www.downloads.netgear.com/files/GDC/GS308T/GS308T_GS310TP_V1.0.5.7.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.