I need to downgrade the firmware in an older AP. It apparently was upgraded to a new version that is not compatible. What is the process to delete the current firmware and replace it with the appropriate version.
Should have an option in the unifi controller to downgrade the firmware, otherwise you can ssh into the AP and run the following commands:
Step 1: Download Old Firmware (Replace URL with version required)
curl -k https://dl.ubnt.com/unifi/firmware/BZ2/4.0.15.9872/BZ.ar7240.v4.0.15.9872.181229.0259.bin -o /tmp/fwupdate.bin
Step 2: Run Upgrade process.
syswrapper.sh upgrade2 &
Source Here
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