10-08-2021 08:19 AM
Hi Expert,
I'm using WLC 9800 CL and i recently downgrade the firmware from 17.5.1 to 17.3.3 due to some voice traffic keep having call quality issue, after i downgrade the firmware to 17.3.3 solve my problem then i found after few days(not sure exactly when it happened) the WLC firmware automatically revert back to 17.5.1, may i know why it behave like this?
Before i downgrade the firmware to 17.3.3 i did deleted the unused files in the flash and only did the downgrade.
Appreciate some one can share with me any step i miss out ?
Solved! Go to Solution.
10-08-2021 08:44 PM
I hope you did it via GUI.
Did you commit your changes after the downgrade? if not it may roll back to previous firmware versions (with default 6-8hr auto abort).
Here is the CLI command to run once you upload the image to flash (assuming 17.3.4 is the code)
c9800#install add file bootflash:C9800-CL-universalk9.17.03.04.SPA.bin activate commit
HTH
Rasika
*** Pls rate all useful responses ***
10-10-2021 12:44 PM
Yes, that is the way.
10-08-2021 12:33 PM
Is you IOS-XE installed in install mode or bundle mode?
Please post the output for the below
10-09-2021 11:39 PM
Once i get the output then will send it here Thanks.
10-08-2021 05:07 PM
Is there a DNAC appliance?
10-09-2021 11:40 PM
Nope just vWLC it self alone.Thanks
10-08-2021 08:44 PM
I hope you did it via GUI.
Did you commit your changes after the downgrade? if not it may roll back to previous firmware versions (with default 6-8hr auto abort).
Here is the CLI command to run once you upload the image to flash (assuming 17.3.4 is the code)
c9800#install add file bootflash:C9800-CL-universalk9.17.03.04.SPA.bin activate commit
HTH
Rasika
*** Pls rate all useful responses ***
10-09-2021 11:41 PM
Yes i did it via GUI, am i still need to commit it after the upgrade although using GUI?
Thanks
10-10-2021 12:52 AM
Yes, usually once 9800 reload, you will have to go there & commit your upgrade via GUI. Otherwise, it will roll back after timer expires (i think 6hr by default)
Rasika
10-10-2021 06:12 AM
Hi,
Do you mean after I'm upload and install the new firmware through GUI then it will reboot, after it come back then i have to go to the software management to click commit?
Thanks
10-10-2021 12:44 PM
Yes, that is the way.
10-10-2021 03:14 PM
Please post the complete output to the command "sh log on uptime".
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