Ruckus AP R320 has a bug that with standalone soft 18.104.22.168.920 (and probably the rest of the 112.x softwares) it can't properly connect to virtual SmartZone 22.214.171.124.699 and bricks. Similar case applies to 126.96.36.199.685. For 188.8.131.52.685 the solution is to connect the AP first to the vSZ 5.1 zone and only after the firmware update it can be upgraded to 5.2. This solution can also be used with 184.108.40.206.699, but there's another way also: update the standalone software to 114.x (we tested 220.127.116.11.1360 specifically as with the latest available at that time) and then it's safe to connect to SZ 5.2.
We have upgraded our AP-s in stock to 114.x standalones today, in near future the the manufacturing process will also catch up.