@Reinaldo Nascimento wrote:
Hello, I have my controllers with a very old version 6.2.1.8 and I want to upgrade to the latest 6.4.x. What would be the update order, or can I go straight to 6.4.x?
The release notes will list any caveats that may apply to your environment based on the particular controller and/or AP models deployed.
The release notes also state it, but make sure you capture a flashbackup prior to upgrade in case you need to revert back to the previous firmware for any reason.