Hi Darwin,
You can try loading the AP CLI script to apply the new controller IP to all the APs.
Below is the sample AP CLI Script:
fw_version=firmware of the AP
model=all
set scg ip x.x.x.x (new controller ip)
Below is the KB article for more info.
https://support.ruckuswireless.com/articles/000004057Make sure to change the AP firmware version (existing AP firmware) on the script.
1. Open a notepad.
2. Copy the above content and save it.
3. On the existing SZ\vSZ, load the text file and apply.
4. Now all the APs will have the new controller IP and will try to connect to it.