Ubiquiti Firmware with
CoovaChilli
Based on UBNT SDK version 3.6 (xs2):
XS2.ar2316.v3.6.Coova.110210.2005.bin
Based on UBNT SDK version 5.3 (all M-series):
Coova Enabled v5.3 Firmware & Flash Tool
Original v5.3 Firmware & Flash Tool
Information about using CoovaEWT and Ubiquiti Firmware