Security Fixes:
- Various security vulnerability fixes and enhancements.
Known Issues:
- When the FW is upgraded to v6.6.4.26 and the switch is rebooted, sometimes the switch does not complete the boot-up process, and the power LED remains yellow.
Workaround: Do a power cycle to the S3300 manually.
- SFP+ model AXM765 cannot be used for 10G stacking.
Workaround: Use other SFP+ models, such as AXM761, AXM762, AXM763, or use DAC cable AXC761/AXC763 instead.
- RPS/AC hot-swap (quickly unplugging and plugging back in) sometimes does not take effect after reconnecting the APS1000W power cord.
Workaround: Reconnect the APS1000W power cord slowly.
- The S3300 console can become unresponsive if the Reset button is pressed repeatedly while the firmware is reloading.
Workaround: Power cycle the switch. Important: Do NOT press the Reset button when the firmware is reloading.
Limitations:
- The EAV (Ethernet Audio Video) feature is supported only on a standalone S3300 switch. Standalone mode means that all four 10G stacking ports are running in Ethernet mode.
- Only the smart switch that functions as the master unit (either a standalone switch or the master switch in a stack) can detect and manage an attached USB device.
- The USB device must support USB 2.0.
- The USB device must support the FAT32 or VFAT file type. The NTFS file type is not supported.
Warnings:
- The released zip contains switch firmware (s3300v6.6.4.26.stk) and MIB files. Unzip the file to extract the switch image for the firmware upgrade.
- Download v6.6.4.26 to both active and inactive (backup) images when upgrading from v6.4.0.x firmware.
- Clear the browser cache to access the switch's device UI after updating the firmware to v6.6.4.26 from v6.4.0.x, v6.6.0.x, or v6.6.1.x firmware.
- See the detailed description about updating the 6.6.4.x firmware in the S3300 Series User Manual, section "Smart M4300/S3300 Firmware Upgrade Procedure", which describes how to configure a mixed-stack system with both the S3300 and the M4300 using 6.6.4.x firmware.
Firmware Update Instructions:
Download the new firmware 6.6.4.26 from the NETGEAR product support website and store it on a local computer. Remember its location in the computer’s file system. Then unzip it to get the switch image “s3300v6.6.4.26.stk”.
Download Link: https://www.downloads.netgear.com/files/GDC/S3300/GS728TX_GS728TXP_GS752TX_GS752TXP_V6.6.4.26.zip
There are four methods to update the new firmware from a computer to the switch.
- HTTP
- TFTP
- USB
- SCC (Smart Control Center)
Below are the steps to update the firmware via HTTP, which is the most convenient method. For the other three methods, check the IG and SW User Manual for details.
- To use the HTTP method, in the GUI select Maintenance > Download > HTTP File Download.
- Set the File Type as Archive or Software.
- Set the Image Name as image1.
- Select the firmware file s3300v6.6.4.26.stk that’s stored in your local computer via the Browse button, then click the Apply button to start firmware downloading. The download takes several minutes. Do not power cycle the switch before.
- Repeat Steps 2-4. Set the Image Name to image2 and repeat Steps 3 and 4 to download the switch image s3300v6.6.4.26.stk to image2.
- Select Maintenance > File Management > Dual Image > Dual Image Status to double-check that 6.6.4.26 is correctly downloaded to both image1 and image2. If not, go back to Steps 3 and 4 to download the switch image again.
- Select Maintenance > Reset > Device Reboot
- Set the Reboot Unit No. option to All (default option), select the checkbox, and then click the Apply button.

The restart might take several minutes. Do not power cycle or reboot the switch before the process is complete.
- After the switch restarts, double-check whether the firmware is updated correctly.
- Log in to the switch.
- Select GUI page System > Management > System Information to view the firmware version.