We had a customer in Mexico who previously we had to exclude Ch 149-165 cause some of the clients did not connect to those channels.
Having just upgraded them to 6.4.2.5 I happen to notice that 75% of their APs, being AP125s were all in air monitor mode.
Now I see in the allowed-channels for the AP125 in MX that support for ch 36-48 is no longer included.
Why would that change between versions? I understand this is a regulatory thing, but I can't find any mention of this in the release notes.