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Ask the Expert- SD-WAN

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Beginner

WLC 5508 Software Upgrade

Hello Everyone,

 

I have some questions about the subject. So i want to upgrade my software release 7.5.102.0 to 8.0.152.0. When i looked 8.0.152.0 release notes, there is a table for transition between softwares. As the table i can just upgrade software to 8.0.152.0 from 7.4.x, 7.6.x and 8.0.1.x. If i don't have these softwares, i can't upgrade my software directly to 8.0.152.0. I should upgrade my software to intermediate release. Which are the intermediate releases? And which one suitable for me? Could someone please share me which softwares should i use to reach 8.0.152.0 release?

 

The other question mark in my head is FUS? What is it? How can i check my FUS image version in my WLC? I read smth about that but it is not still clear. 

 

 

6 REPLIES 6
VIP Advisor

Re: WLC 5508 Software Upgrade

Hi

You can upgrade directly to 8.0.152 from 7.4 and above.
To check version of FUS, go to your WLC in ssh and type in show sysinfo:

You'll have a line as follow:
Bootloader Version............................... 1.0.20

What is your version?

Thanks
Francesco
PS: Please don't forget to rate and select as validated answer if this answered your question
Beginner

Re: WLC 5508 Software Upgrade

Here is my version of FUS;

 

Bootloader Version............................... 1.0.1

Hall of Fame Community Legend

Re: WLC 5508 Software Upgrade

I'd recommend upgrading the FUS.
VIP Advisor

Re: WLC 5508 Software Upgrade

Agree with Leo. Anyways, on this version release note, Cisco is recommending at least 1.9.0:
https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn80mr5.html#pgfId-1162364

Thanks
Francesco
PS: Please don't forget to rate and select as validated answer if this answered your question
Highlighted
Beginner

Re: WLC 5508 Software Upgrade

Thanx for your replies. Then i will upgrade my FUS image with my ios. Is there any difference upgrade process between ios and fus? I have 2 WLC which are working in AP SSO mode. Is the same upgrade procedure that Cisco recommends for both the FUS and iOS as below?

https://supportforums.cisco.com/t5/wireless-mobility-documents/how-to-upgrade-wlc-in-ha-setup/ta-p/3148350

Hall of Fame Community Legend

Re: WLC 5508 Software Upgrade

My recommendation is upgrade the firmware FIRST and then the FUS.
If you don't do the firmware first, you'll need to break HA and then upgrade the FUS to each unit individually (and then the firmware).
If you upgrade the firmware first, the FUS code can be pushed to the secondary automatically.
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