WLC2504 FUS image version vs IOS image version

[lcaruso]

Hello,

I assume it is requirement that the FUS image not be newer than the IOS image? Please advise if this is an issue.

Thanks.

[Rasika Nayanajith · Accepted solution]

No, it is not.

Typically FUS upgrade recommended to latest one even though you are running on 7.4.x or 7.6.x or 8.x codes. 

Here is the latest FUS 1.9.0.0 release notes & go for it as FUS version.

http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/fus_rn_OL-31390-01.html

Typically 30-45 min is required for this upgrade. So arrange a sufficient downtime when doing

HTH

Rasika

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