Hey,  here is the documentation how to manage firmware of meraki. https://documentation.meraki.com/zGeneral_Administration/Firmware_Upgrades/Managing_Firmware_Upgrades   and here the best practices for the MR's. https://documentation.meraki.com/Architectures_and_Best_Practices/Cisco_Meraki_Best_Practice_Design/Best_Practices_for_Meraki_Firmware#Best_Practice_for_MR_Firmware   do the upgrade and check afterwards if you still have the disconnects.   hope this helps roger ... View more