Hi  shlomoi,
 
In addition to  rhbirkelund comment, the Cisco series 916x access points come pre-loaded with both DNA and Meraki images. This allows for flexibility in choosing which management mode will best suit you, the user. This document contains a pre-flight checklist for migrating APs from Meraki managed mode to DNA mode. 
 
Do you have an IOS-XE controller?
The controller can be a physical 9800-CL or virtual vWLC in the cloud. DNA management mode APs cannot run in autonomous mode and require a controller to operate. 
 
Please, find the documentation below - https://documentation.meraki.com/MR/Other_Topics/916X_Management_Mode_Checklist_and_Troubleshooting
 
 
					
				
			
			
				
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