For MG51/51E, Applying this firmware will upgrade the firmware of the Modem. This upgrade begins automatically after the MG has finished upgrading to MG 3.212. This upgrade will require 250 MB of data and up to 20 minutes (depending on bandwidth) to complete if uninterrupted. Please contact Meraki Support if you have any additional questions or require assistance.
Bug fixes
Corrected an issue for MG21 that resulted in the modems not defaulting to 1500 MTU when the network MTU was not specified
Enabled Cellular Modem upgrade for MG51/51E (See Important Notice)
Improved MG21 modem reliability to prevent them from getting stuck
Fixed a problem that resulted in MG21 IPv4 custom APNs not working properly
Known issues
MG Frequent Reboot under investigation
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