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Coversion from Zone Director to vSZ Problems

New Contributor II
I recently just converted my zone director with about 260 wireless APs over to a VSZ platfrom. I moved to the newer 3.5.1 and used the built in migration. I now have a handful of APS that are not keeping their connection with the Controller and are getting hearbeat loss.

I do have a support case open and they didn't really have an knowledge of it yet but they said I shouldn't have gone to 3.5.1 even though I find it recommended on the support website. Last thing we did was the certificate replacement At this point it seems to be stuck on about 78 remaining APS (I'm thinking that is the number of APS I'm having trouble with)

I also tried to factory default 15 APS then have them rebooted and clear the old record of out vSZ so they would register new. Sadly that doesn't seem to fix the issue.

The next things I'm going to try is theirs a newer ap patch firmware from to I'm hoping that the firmware flash if it does that will fix some issues. I have taken up backup though just in case this makes it worse.

What is the manual way to flash the APS kind of think that will be my next route if this doesn't work or if it gets held up on the APs that are not communicating correctly.