I have a Cisco 8861 phone (multi platform) with a really old firmware on. I am trying to work out the documented upgrade path for the phone as it appears I cannot jump to the latest version immediately, I need to step the upgrade.
Could someone help me find where the upgrade path is documented for the 8861 phones? I have a few other models I need to upgrade like the 8841 and 7841. I am really just looking for the release notes or similar (I could not see them on the firmware download page) that helps me understand the upgrade paths and the steps (if any) needed to upgrade to the latest version.
Thanks in advance for your help.