Joshua, ZD3K version 9.8.2.0.15 is recommended over 9.8.1, available from this link:
https://support.ruckuswireless.com/software/637-zd3000-9-8-2-0-15-mr-software-release And there will be a 9.8 MR3 update with bug fixes expected sometime this summer too,
for customers with 7962s in thier deployment base.
Be aware that you CAN downgrade your ZD firmware, but you MAY LOSE YOUR CONFIGURATION,
back to factory default state (IP = 192.168.0.2, admin/admin login credentials).
Your APs will still have their names when they rejoin your ZD3K on 9.8, and will automatically
load the same version firmware as the ZD. You may need to re-enter the AP 'Location' fields.
If you load a current ZD debug file (from Administer/Diagnostics) into the Log Analyzer (Rowdy)
on our Support site, you can see your WLAN details, so you can re-create them after downgrading.
https://loganalyzer1.ruckuswireless.com/Rowdy/