Disconnect the AP from the network and press the factory reset button will revert its IP to 192.168.0.1 address.
If you directly connect a laptop with 192.168.0.x you can use HTTPS to login, with 'super' uid, 'sp-admin' pw.
From the WebUI, Maintenance::Upgrade, click Local upgrade method, and point to a 100.1.0.0.194 image for your
model of AP, downloaded from the Support AP site.
https://support.ruckuswireless.com/software/709-standalone-ap-software-100-1-0-0-194-all-aps