The process is pretty simple.

  1. Download the new firmware version.
  2. Upload the firmware via WinSCP to /var/nsinstall
  3. Open a shell on the NetScaler and navigate to /var/nsinstall and type "tar -zxvf NSVERSION.tgz"
  4. From /var/nsinstall run the command ./installns
  5. Reboot when prompted