Hi Janko,
Yes you can try it by deploying a new vSZ instance (separate than your existing vSZ-H on 3.6.2.0.222) in your VM platform.
You can use it on trial basis for 90 days and post that it will expire.
If it lands on your expectations, then you can upgrade your production vSZ to 5.xx version and delete the trial vSZ from your VM host.
I will recommend you to try 5.1.2.0.302 which is the lastest MR release (maintenance release).
To deploy a new vSZ on 5.1.2 version, depending upon your hypervisor platform, download the image from below links.
For VMware and AWS:
https://support.ruckuswireless.com/software/2186-vsz-5-1-2-0-302-mr2-software-release-esxi-aws-ova-i... For Hyper-V and Azure:
https://support.ruckuswireless.com/software/2189-vsz-5-1-2-0-302-mr2-software-release-hyper-v-azure-... For GCE:
https://support.ruckuswireless.com/software_terms_and_conditions/2188-vsz-5-1-2-0-302-mr2-software-r...For KVM:
https://support.ruckuswireless.com/software/2187-vsz-5-1-2-0-302-mr2-software-release-kvm-qcow2-imag...For release notes of this version, refer
https://support.ruckuswireless.com/documents/2958-smartzone-5-1-2-0-302-mr2-release-notes/downloadI hope this answers your query.
Syamantak Omer | Community moderator | Staff TSE | CWNA | CCNA | RASZA | RICXI | Follow me at https://linkedin.com/in/syamantak-omer-5949b6124