Solution: Reset the device to factory default or recover via. ... https://help.ubnt.com/hc/en-us/articles/204910124-UniFi-TFTP-Recovery-for-Bricked-Access-Points.
Ubnt unifi firmware recovery
FLASHING THESE UNITS VIA THE GUI IS A ONE WAY STREET! INITIAL FLASH: -install latest airos/ubnt firmware first -reset to defaults -flash to ... 939c2ea5af
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