Cisco Cisco 4404 Wireless LAN Controller

For instructions on downloading software to the controller using either Cisco WCS or the controller GUI 
or CLI, refer to the release 4.1 versions of the Cisco Wireless Control System Configuration Guide and 
the Cisco Wireless LAN Controller Configuration Guide. 

Click this link to access those documents:

Details for upgrading your network to Release 4.1.190.5 from earlier releases of 3.1, 3.2, 4.0 and 4.1 are 
described below. 

If your controller is installed with release 4.0.2xx software, you must upgrade to a version of release 
4.1 (4.1.171.0, 4.1.185.0 or later) prior to upgrading to Release 4.1.190.5.

If your controller is installed with release 4.0.1.xx or 3.2.xx, you must upgrade with two 
intermediate releases prior to installing Release 4.1.190.5.

First, upgrade to 4.0.217.0

Secondly, upgrade to 4.1.18x.x

Thirdly, upgrade to Release 4.1.190.5

If your controller is installed with release 3.1.x, you must upgrade with three intermediate releases 
prior to installing Release 4.1.190.5. 

First, upgrade to 3.2.195.10

Secondly, upgrade to 4.0.217.0

Thirdly, upgrade to 4.1.18x.0

Fourthly, upgrade to Release 4.1.190.5

If your network is operating with 1520s or you plan to install 1520s in your network, you must set the 
boot variable on the 1520 BEFORE upgrading from release 4.1.190.5 to 4.1.191.24M (or greater mesh 
release). Updating the boot variable ensures the 1520 joins correctly.

You should check the boot variable setting before updating the boot. 

If the boot system image is visible, then no boot variable update is required.

For release 4.1.190.5, the system image should read: 
flash:/c1520-k9w9-mx.124-3g.JMA1/c1520-k9w9-mx.124-3g.JMA1

If the boot system image is missing, then you must update the boot variable.