flash:wlanui not working on Cisco 857w

Unanswered Question
Oct 5th, 2008

I have a 857w router and I am trying to configure wireless on it. From the SDM when I click on configure wireless a link pops into my browser to go to

This says page cannot be displayed.

I believe I am missing this file from flash: but cannot find anywhere to download a new one or anything saying what I need to download.

Any help really appreciated.


I have this problem too.
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carenas123 Fri, 10/10/2008 - 07:50

Use the following command to verify that the sdm.tar file is in flash RAM:

Router# show flash:

The result of this command should include the sdm.tar file if the full version of Cisco SDM is loaded on the flash memory.

If sdm.tar is present in flash RAM, go to step 2.

If the result of this command shows the following files, Cisco SDM Express is in the flash memory, so skip step 2 and go to procedure 2 for the Cisco IOS Software upgrade.






wlanui.tar (this file is available only if WLAN application is available on the router)

Go to below link to download the Cisco IOS software.


Here is the URL for the Cisco Router and Security Device Manager Quick Start Guide



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