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Warning - upgrade from to breaks cluster


Dear Ruckus Crowd,

please be careful when you try to upgrade from aka MR2 release to 

it might break your cluster and you will have a bad day if you do not have a exported cluster backup or snapshot.

Reproduced with vSZ-E. Testing other models tomorrow.

Setup clean vSZ with or upgrade one to Than make a backup and upgrade to Upgrade process will fail after migrating database in step preparing system with cluster operation failed.

You will be able to get access to UI but after restart no cluster process will start any more..

More details will follow. 

Best regard,


PS: kudos to my colleague who found that out the hard way.. because APs for project changed to R350s and he needed to upgrade…


Hi Mark,

I have replicated this issue in the lab as well and had a quick discussion with the engineering on this issue. As per engineering the to is not a supported upgrade path as the release the MR2 was targeted for 6.1.1(Releasing in next couple of months). The MR2 have changes in the database and binaries as per v/SZ 6.1.1, moreover 5.2.2MR2 have major bug fixes which cannot be ported to 6.1 which was released back in Dec 2021. The Supported upgrade path from v/SZ 5.2.2 to 6.1 will be >> or >>

We acknowledge that we need to update the 6.1 Release notes with the correct upgrade path limitations and I have notified our Technical Publications Team to make this change at the earliest. Once again, thank you for bringing this issue to our attention through forums and we sincerely apologize for the inconvenience caused to you.



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RUCKUS Team Member

To close loop on this Topic, we have updated the 6.1.0 Release notes and Upgrade Guide with supported upgraded path. In addition to that, we have also updated the Release Notes with a Warning on "No Support to upgrade to 6.1.0 Release". Here are the reference Documents:

SmartZone 6.1.0 (GA) Upgrade Guide


SmartZone (GA) Release Notes


SmartZone 5.2.2 (LT-GD MR 2) Release Notes



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Dear Ankush,

thanks again! Now no one should trap in if he read important part of documents first.



RUCKUS Team Member

Here is the final solution to this issue:

Community: v/SZ Upgrade Fail 

With regards,
Orlando Elias
Technical Support