Learn how to update firmware on a airMAX M and airMAX AC device, where to find it and how to troubleshoot it if it doesn't work.

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airMAX M

First, download the correct firmware for your device from Ubiquiti's downloads page. airMAX M products come in three builds, XW, XM and TI. The appropriate version can be found under System.

Go to the System tab of the device that you wish to upgrade

Under Firmware section, click the Choose File button and upload the firmware that was downloaded earlier

Click Upload.

Once the file has been uploaded, it will be checked for compatibility and an Update button will appear.

Click Update and wait for the device to come back online.

airMAX AC

First, download the correct firmware for your device from Ubiquiti's downloads page. airMAX AC products come in four builds, WA, XC, 2WA and 2XC. The appropriate version can be found under System.

Go to the System tab of the device that you wish to upgrade

Under Firmware section, click the Upload button and upload the firmware that was downloaded earlier

Once the file has been uploaded, it will be checked for compatibility and an Update button will appear.

Click Update and wait for the device to come back online.

Troubleshooting

File size too large

If the device comes back with a message saying "File size too large", then you might need to reboot the device, as the older M devices have a limited amount of RAM to store the new file in temporarily.

Legacy Devices

Firmware for the airMAX M devices and older Legacy (non-airMAX) devices are found under two separate menus on the download page.

TFTP

If the firmware update does not complete after multiple attempts, or if the airOS GUI is completely unreachable then it might be necessary to do a TFTP recovery on the device.