You should be able to install 6.5r14 on the SR2124P, but not the AP230, per the release notes for 6.5r14: https://docs.aerohive.com/330000/docs/help/english/documentation/6.5r14_IQEngine_ReleaseNotes.pdf
Are you having issues pushing configuration updates out to your devices as well? That might indicate a firewall issue blocking the updates. You’ll want to confirm you have all the appropriate ports allowed for your network. You can find a list of all the needed ports for your XIQ instance by going in to your XIQ> Click on the silhouette icon next to your name in the top right corner> About ExtremeCloud IQ> Click on the link next to Firewall Configuration Guide to see the configuration guide specific to your regional data center.
If all of the firewall ports check out, I’d recommend trying to upgrade the firmware on your switch via a TFTP server. This guide covers how to do that: https://extremeportal.force.com/ExtrArticleDetail?an=000056869&q=TFTP%20firmware Please note that step 4 of that guide requires a support case and a scheduled screen share session with one of our engineers so they can enter the bootloader password in for you.
As for the alarm about no radsec proxy, once you are able to push a complete configuration out to all of your devices, they will elect a new radsec proxy and that alarm will clear up.
Hope that helps!
