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upgrade cisco 8510 wlan controllers

I have two 8510 wireless controllers running in SSO mode and I would like to upgrade from 7.4 code to 7.5 to take advantage of the AC modules that I have in our 3600 access points.  What is the prescribed method of doing so on the 8510's?


upgrade cisco 8510 wlan controllers

You  can upgrade or downgrade the controller software only between certain  releases. In some instances, you must first install an intermediate  release prior to upgrading to software release


shows the upgrade path that you must follow before downloading software release

Upgrade Path to Controller Software Release    

Current   Software Release

Upgrade   Path to Software

7.0.x releases

You can upgrade directly to

Note If    you have VLAN support and VLAN mappings defined on H-REAP access  points and   are currently using a 7.0.x controller software release  that is prior to, we recommend that you upgrade to the release and then   upgrade to to avoid losing those  VLAN settings.

You can upgrade directly to

7.2.x releases

You can upgrade directly to

Note If    you have an 802.11u HotSpot configuration on the WLANs, we recommend  that you   first upgrade to the controller software release  and then upgrade   to the controller software release.
You  must downgrade from the controller   software release to a  7.2.x controller software release if you have an   802.11u HotSpot  configuration on the WLANs that is not supported.

7.3.x releases

You can upgrade directly to

7.4.x releases

You can upgrade directly to

•When  you upgrade the controller to an intermediate software release, you  must wait until all of the access points that are associated with the  controller are upgraded to the intermediate release before you install  the latest controller software. In large networks, it can take some time  to download the software on each access point.

•If  you upgrade to the controller software release from an  earlier release, you must also upgrade to Cisco Prime Infrastructure 1.4  and MSE 7.5.

•You  can upgrade to a new release of the controller software or downgrade to  an older release even if Federal Information Processing Standard (FIPS)  is enabled.

•When  you upgrade to the latest software release, the software on the access  points associated with the controller is also automatically upgraded.  When an access point is loading software, each of its LEDs blinks in  succession.

Please check the below guide which may be helpful for you