How to manually flash firmware on a Datto Managed Networking-enabled Access Point


In some cases your access point may need to have its firmware "flashed". Flashing the firmware simply means you're re-installing the firmware onto the access point. This may be needed due to the access point running outdated firmware or you're having technical problems with the access point.

Follow the instructions below to re-flash. Before adding them back to your network, ensure follow the instructions at the end of this Article. 

Step One:

Windows users: Install a utility program called WinPcap. Get it here:


Step Two:

Download and save the flash utility for your model and network:


Version 6.3 (latest release: 6.3.14)

Required for A-series APs.

Step Three:

The flash utility is a "console application", so open up a console window. In Vista or Windows 7, go to the Start menu and search for "command"; in Windows 8, press the Windows key+R and enter "cmd". Once you have the console window open, you will first need to go to the directory you downloaded the file to. In most cases you can simply type cd Downloads and press Enter to get to your Downloads directory. Once in the correct directory, type open-mesh-flash-ng and press Enter. You should see output similar to the following:


Note: the number of your actual Ethernet Device from the list displayed (in this case, "3").    Hint: It will usually contain the word "Ethernet". Some users will have to run the cmd program as "administrator" to select their interface correctly.

Step Four:

Type "open-mesh-flash-ng n" where "n" is the Ethernet Device number.  Hit "Enter"


Connect your A40/A60 access point to your PC's Ethernet port and power it on. If it was already powered on, power-cycle it by removing the power and plugging it back in. 



A crossover cable is NOT required to connect your unit to your computer via ethernet cable.

The output of the flash utility should look similar to below. If after 10 seconds you don't see this, try power cycling your router and/or check the interface number to make sure you are using your computer's Ethernet port. 


The reflash will take about 3-15 minutes to complete (depending upon the router model) so please be patient.

The flash program will not exit on it's own.  You can either plug in another node to start the process again, or hit "Ctrl+C" to exit the console and flash utility.

You can display the version of the firmware embedded in the flash utility by typing "open-mesh-flash-ng -v".


In Networking UI:

  1. Before plugging the access point back into your network, ensure you've selected the proper firmware version(I.E 6.3.14) on the Maintenance page and disable automatic upgrades. Different firmware versions have different dependencies, and a mismatch here will cause network issues. Both of these options can be found in Configure > Maintenance.

  2. After reflashing a unit and connecting it back to your local network, it must also be paired with your network again. An alert will show up in your Networking UI advising you to re-pair the unit once it comes back online.

If you have changed the wireless channel on your network from the default, you will find that after reflashing wireless nodes it may take up to 40 minutes to check-in.  This is because the reflash returns the units back to the default settings.  An alternative is to plug the unit in via Ethernet and wait for the device to update its channel before making it a wireless node again.

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