We have a ZD1106 (18.104.22.168 build 32) with 18 access point ZF7372. We are planning to update the firmware ot these devices. Is there any recommendation (educated action plan) for upgrading from 22.214.171.124 to the Recommended Firmware (126.96.36.199.73).
Check the Ruckus Release Notes for each of the major releases (9.8, 9.9, 9.10), this will tell you what the minimum version is you can upgrade from. You'll definitely need to do it in multiple steps to get to the latest from 9.7.
The release notes are available on support.ruckuswireless.com