Neptune Systems Apex Classic Firmware Update Info

The Latest Apex Classic Firmware Version is: 4.51_2E17

Version 4.51 brings new additions to the Apex Classic System:

  • Support for the new Neptune Systems product release of the Fluid Monitoring Module (FMM) and accessories such as flow sensors and optical sensors
  • Full support for Ecotech Marine’s Radion Generation 4 Pro LED fixtures
  • Resolution of an issue using the Classic Dashboard while using recent Safari versions on Mac and Apple iOS devices
  • Variety of other miscellaneous enhancements/fixes, including a firmware update for 1LINK modules.

Specific support for these products can be found in the Get Started Section.

For more information or assistance, visit support.

How do I update my system?

If you’ve never performed a previous system update, that’s okay! Start by downloading the latest firmware available below and watching the Firmware Update tutorial guide to get a glimpse on what’s involved.

Firmware Update Download:

PC Windows Download:

Mac OSX Download:

Okay. So where do I start?

To Start, you can continue to follow the example in the tutorial video or read the walk through here. To begin, ensure a couple of small things first like you’ve downloaded the Firmware, Connected the Apex into your home WIFI router. The Apex should have a ‘Green’ and ‘Orange’ light on the Ethernet port when you’re connected. The Apex should also have a green ‘Status’ light. Let’s get

To update the firmware follow the following procedure:

  1. First, confirm Apex is directly connected to your to your home Wi-Fi router.
    1. Please do not do firmware updates over Wi-Fi
    2. If connecting to Apex to your home router is not possible, see here 
  2. Second, connect the computer you downloaded the firmware on too with your Wi-Fi router via an Ethernet cable. Disable the wireless on that computer.
  3. Disable ALL virus/firewall software on your computer
    1. PC: If you do not know how to do this, then restart your computer in “Safe Mode with Networking”
  4. Check to make sure DHCP is enabled on your Apex AquaController and restart.  To do this, go on your Apex AquaController Display screen and go to: System> Netsetup> DHCP> ON.
  5. In the NetSetup menu look for ‘Restart’ and click on it. This will cause your display to go blank and your system will restart. Wait for it to finish and return.
  6. Once that’s complete, go to your computer open the firmware folder and double click onto the Apex flash utility. This will open the ‘Apex Flash Utility program.
    1.  For PC:
      1. Start by searching for the Apex using the ‘Magnifying Glass’ button feature. If your Apex appears, click on it and press OK.
      2. Check to make sure you have the Apex username and password correct (The username and password is not the same as Apex Fusion)
        1. Default username is ‘admin
        2. Default password is ‘1234
      3. Next, click ‘Update Firmware‘.
      4. When firmware is complete. Click the ‘Magnifying Glass’ button feature. If your Apex appears, click on it and press OK to make sure that the IP address did not change.
      5. Next Click ‘Update Web Pages‘.
    2. For Mac:
      1. Search for a controller using the “WiFi” icon in the bottom left-hand corner.
      2. When it appears on the window that slides down, click on it and press OK.
      3. Now, click ‘Update Firmware‘.
      4. When firmware is complete. Click ‘Update Web Pages‘.
  7. Once the updates are done go to your Aqua Controller Display and go to System> Self Test. It should show the latest firmware version.
  8. Finally, clear the cache history in your browser (see below for your specific browser)

Instructions for Clearing Cache History



  1. Click the Chrome menu on the browser toolbar
  2. Select Tools
  3. Select Clear Browsing Data
  4. In the dialog that appears, select Empty Browser Cache
  5. Use the menu at the top to select the amount of data you want to delete. Select beginning of time to delete everything
  6. Click Clear browsing data
  1. At the top of the Firefox window, click on the “Firefox” button (Tools in Windows XP) then click “Options”
  2. Select the Advance Panel
  3. Click on the “Network” tab
  4. In the “Cached Web Content” section, click “Clear Now”
  1. Click the “gear” at the top right to open you settings menu
  2. Click Safety
  3. Delete Browsing History
  4. Select Temporary Internet Files
  5. Uncheck all other boxes
  6. Click the Delete button on the bottom
  1. Click on the “Safari” Menu
  2. Select Empty Cache
  3. Click Empty