FUS updgrade on controllers

Wifi_Eshwar92 — Mon, 05 Jul 2021 14:42:39 GMT

Hello All,

I have few queries about FUS upgrade.

1) Is it only once upgradable on controller? If FUS is too old and we need to upgrade it to the new one, in that case we might need 2 upgrades (check point X to Y then new version). What about this scenario?

2) How to determine FUS upgrade? Based on software version or Field Recovery image version?

3) What is the minimum version required to upgrade to 1.9.0.0?

Thanks a ton in advance.

Re: FUS updgrade on controllers

Sandeep Choudhary — Mon, 02 Oct 2017 13:11:41 GMT

Hi,

You can upgrade twice. it's recommended to upgrade the same firmware version only once.it's advised to upgrade once the FUS because the WLC reboots and sometimes they will see that the FUS has not upgraded and upgrade again instead of waiting for 30 to 45 minutes.

2) How to determine FUS upgrade? Based on software version or Field Recovery image version?

HISTORY of : FUS 1.7.0.0 and 1.8.0.0 was highly recommended for 7.3.x software releases and above. (From my own experience, you should have already has those applied)

3) What is the minimum version required to upgrade to 1.9.0.0?

You can diretyl install version 1.9 for 5500 series.... and 2.0 for 2504 WLCs.

Regards

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FUS updgrade on controllers

Re: FUS updgrade on controllers