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How to enter Flash Mode on the Ubiquiti Nano M2/5

So it took me a little time to work out how to flash these units with the ARDEN software.


To enable the TFTP Server built into the Nano devices you need to do the following.

On the back there are 7 LEDS.  The 4 on the right are the ones I will reference below


  1. Depress the "Reset Pin" with a small screwdriver.
  2. Power on the unit, look for LED 2/3 to come on this confirms you have the button pressed.
  3. LED will go off after about 5 seconds
  4. Continue to hold the button for about 20 seconds.
  5. All 4 right LED will flash at the same time. They will flash 3 times
  6. Continue to hold the button for another 5 seconds.
  7. Now LED 1-3 and 2-4 will alternate in a flip flop fashion

You have now activated the TFTP server and should be able to use your computer to send the new firmware via a TFTP client.