02-16-2021 06:09 PM
I factory reset the R510 which was already in use/online in Smartzone 3.6 and the AP firmware was 188.8.131.52.254. I deleted the AP from the existing zone and hoping after factory reset the AP, it will show up on the staging zone again, but it never did.
02-16-2021 07:58 PM
just figured out, the problem was the uplink switch. Disregard this question.
02-17-2021 06:59 AM
AP shows in staging zone, when it sends request to SZ. AP must know SZ IP for that (manually configured sz IP, or recieved from DHCP option 43 or DNS).