Shortly after version 1.0 we have released version 1.1 of our firmware, which is now based on Gluon v2016.1.1
Beside some minor bugfixes, we have added support for the TP-Link TL-MR13U v1 and Onion Omega.
If you want to this firmware on an Ubiquity device, you no longer need to downgrade AirOS to v5.5.x, it is now also safe to install the Freemesh firmware from AirOS v5.6.x.