Thanks for your response.
Unfortunately, the aruba 365 is not joining the cluster properly.
When i use https GUI, i'm redirected to the IP of the master (aruba 325) but the aruba 365 is not listed in "Access Point".
When i ssh to the aruba 365, i got a "degraded state" message.
Aruba 325 is on firmware 6.5.4.3, buid 61877
Aruba 365 is on firmware 6.5.4.2, build 61807
When i use GUI to update on the aruba 365, it says i'm on the latest version.
What can i do ?