Question

Sorry but, when I install higher version, my RM32ai doesn't appear.

Answer 1

Maybe these two articles from the Knowledge Base can help you. Many things depend on the computer you use, so for more help you need to tell what you are using. By the way: The newer UC's need a complete new install, not just an update from an older version.

"My StudioLive Mixer (classic or AI) will not connect with my PC Firewire 800 port"
http://support.presonus.com/hc/en-us/articles/210047223

"How Do I know my StudioLive (Ai) is connected to my computer and functioning over firewire?"
http://support.presonus.com/hc/en-us/articles/210047233