Re-run the AREDN U-Boot Test program and look for a "GOOD/GOOD" test.
If "GOOD/GOOD", you can safely use the AirOS GUI to install the AREDN firmware.
Requires Windows 7 or higher and Microsoft .NET Framework 4.5.
Notes for Over the Air Upgrade are below
Over the air firmware flash
Beginning with release 184.108.40.206 you can update firmware over-the-air without needing to visit each node. Use the following steps to upgrade:
From an existing AREDN 3.0.2 node: Download the Over The Air Upgrade Patch “V3.0.2.OTA Support Final” found below
From an existing BBHN 3.1.0 node: Download the Over The Air Upgrade Patch “BBHN V3.1.0 OTA Support Final” found below
Load the patch using the Upload Firmware function on the Administration screen
Give the node a few minutes to reboot
Check the “Keep Settings” box that now appears on the Administration page
Upload the appropriate 220.127.116.11 sysupgrade firmware from the table, below
Give the node 5 minutes to go through two reboot cycles
Node will come up in the new firmware with the old settings intact.
If you don’t need to perform an over-the-air upgrade, then simply load the sysupgrade firmware. Once the 18.104.22.168 release has been installed on a node, subsequent upgrades can be performed over-the-air and, when the box is checked, will preserve existing settings.