The firmware issues is definitely not resolved. On this round of updates to my MS320 switches from 9.30 to 9.32, all but 5 of my switches had to be manually rebooted post deployment in order for the firmware to update. I thought last Friday's snow day was a great day to update all the switches. I was very wrong, since that required me to come in anyways and go closet t closet pulling power to switches until they were all updated and back online.
Thank you to everyone for being so active in the Meraki Community.
We have identified the issue which has been causing MS22, MS42, MS220 and MS320 switches to require a physical reboot during an upgrade. The issue is present on switches currently running MS 9.0 and above. We hope to rectify this issue and provide a fix shortly.
In the interim, we have discovered a reboot of the switch via dashboard prior to performing an upgrade will prevent the switch from becoming unreachable.