Cisco WLC - firmware upgrade




  • This manual covers firmware upgrade on 4400 series WLC however on different controllers procedure is the same.
  • Until we start the upgrade process we have to check if we can upgrade directly to new version of we have to first upgrade to transitive version.
  • We will use FTP server for copying files.It is better solution than tftp especially if contoller is upgraded remotely.
  • In this case we will upgrade firmware to version 7.0.235.
  • 1.Copy firmware image into our controller via FTP.



  • 2.Restart controller to activate new firmware.


GUI allows us to save changes before reloading..

  • 3.Wait few minutes to download new firmware by access-points.


If your access-points are working in "H-REAP" mode during downloading process they are shown as a "Local".


  • 4.Copy "emergency image".


Emergency image is not mandatory but is very helpfull in case of problems.


Restart controller.

  • 5.Check running version after restart.



  • 6.Test wireless network on new firmware version.


dzbanek 2012-01-07

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