Hi @marvelsferb7 , Just to follow up on the great advice from @PhilipDAth , cross reference the AP models with the version of WLC firmware you may go to: https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html The last version you can go to is 8.5 anyway so not a massive jump. Email tac@cisco.com with your request. Include your cco account details and product serial number. im sure you’re aware but you’ve got a couple more years left in the 2504 before it’s eol https://www.cisco.com/c/en/us/products/collateral/wireless/2504-wireless-controller/eos-eol-notice-c51-740645.html
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