Enhancements:

• A new CPU version is supported.
• A better load-sharing algorithm for port members in a link aggregation group (LAG) is supported.
• A new physical layer driver is supported to improve interoperability.
• IGMP snooping is now disabled by default.

Known Issues:

• After you update the firmware to version 1.0.0.8 or a later version, the Plus Utility does not work with a version earlier than version 2.7.2.
  Workaround: Install the latest version of the Plus Utility. Visit http://www.netgear.com/support/product/PCU to download the latest version

Download Link: https://www.downloads.netgear.com/files/GDC/XS512EM/XS512EM_V1.0.2.5.zip  

Firmware Update Instructions:

Warning:

• If you update the firmware from version 1.0.0.6 or an earlier version, the upgrade process includes a chipset driver update, which will take between 8 and 10 minutes. Do not interrupt the upgrade process during this time. The switch will reboot automatically after the upgrade process is completed.
• If your switch is currently running a firmware version earlier than version 1.0.1.1 and you update the firmware to version 1.0.1.1 or a later version, your admin password is reset to the default password. 

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..