Neptune Systems Apex Classic Firmware Update Info

The Latest Apex Classic Firmware Version is: 4.53_AB17

Version 4.53 brings new additions to the Apex Classic System:

  • Most notable in 4.53 is support for a new Neptune Systems product, the COR family of pumps
  • In the release, there is updated module firmware for the FMM
  • There are many other changes, enhancements, and fixes. Please read the Firmware Announcement on the Neptune Systems Community Forum for full details

Important notes:

  • The firmware update is a two step process.  After the firmware update has completed, wait at least 60 seconds, then update the web pages.
  • After updating your Apex Classic’s firmware and web pages, be sure to go to the Module setup page using the Classic Dashboard and update any modules which show as (OLD)

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 the firmware has completed, the Apex will restart. Wait until it has finished restarting.  Click the ‘Magnifying Glass’ button.  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 the firmware has completed, the Apex will restart. Wait until it has finished restarting.  Click ‘Update Web Pages‘.
  7. Once the updates are done go to your AquaController 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. Hold down the Ctrl key and click the Reload button in the Chrome toolbar
  2. Or, hold down the Ctrl key and press the F5 key.
  1. Hold down the Ctrl key and press the F5 key.
  2. Or, hold down the Ctrl and Shift keys and press the Rkey.
  1. Hold down they Ctrl key and press the F5 key.
  2. Or, hold down the Ctrl key and click the Refreshbutton in the IE toolbar.
  1. Hold down the Shift key and click the Reload button in the Safari toolbar.
  2. Or, hold down the Command and Shift keys and press the R key.