I would highly recommend going cloud if you can, because when you do have a security compromise of some sort the last thing you want is for your SIEM tool to be affected as well.

If you put a device into a network with a firmware it does not support, it should run the latest version that it can support, which should be listed in Meraki's documentation.For example, an MR34 AP only supports up to firmware 26.8.3, if you put it ...

Are you logging into the correct portal/app for the customer's services? Meraki Go and Meraki are not the same product line and have different web portals and apps, if you are logging into the wrong one I would expect an error.If that is not the case...

I WANT IT

There is a script published by Meraki that you can use that will basically keep pushing the scheduled upgrade forward a week with the net effect of it never happening. https://github.com/meraki/automation-scripts the folder/script is firmware_lock