Ruckus has posted the SmartZone 3.2.1 (MR) for SCG-200, SZ-100, vSZ-E, vSZ-H, vSZ-D.
SZ version 3.2.1.0.139 Maintenance Release includes current fixes and AP enhancements (R710),
and uses the same SZ 3.2 GA MIBs for SNMP managment.
Read the SmartZone 3.2.1 (MR) Release notes at this link:
https://support.ruckuswireless.com/documents/939-smartzone-3-2-1-mr-release-notes