Cisco Catalyst SD-WAN Upgrade Guide

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Cisco Catalyst SD-WAN Upgrade Guide

Order of firmware upgrade

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Describes the precedence order for firmware upgrades based on the files available on the remote server. This process ensures that modules are updated in a specific sequence to maintain system stability.


The firmware upgrade process follows a specific order of precedence based on the firmware files present on the remote server.

Upgrade Sequence

Modules are upgraded in this order:

  • Wi-Fi Module

  • P-LTE-450 module

  • LTE module

To ensure the correct module is upgraded, save only the relevant firmware files on the remote server.

For example, if you want to upgrade the firmware for LTE modules, make sure that no Wi-Fi firmware files are stored on the server. If firmware files for other modules, such as Wi-Fi or P-LTE-450 module are present, those modules will be upgraded first, following the precedence order, even if you do not intend to upgrade them.

Note

For WI-FI modules, the upgrade process works only when the device is in Workgroup Bridge (WGB) mode.

If the Wi-Fi module is turned off or unreachable, Wi-Fi module firmware upgrade will be skipped and cellular modem firmware upgrade will continue.