You should never over lap channels that causes co-channel interference. If you have to then as stated above the AP's that are farthest physically apart should use the same channel.
Also, I would turn off 2.4GHz unless you NEED IT and even then you probably don't NEED IT on all 4 AP's. Try just on 2 AP's to reduce interference and see what happens. Many cases in our offices I have either completely turned off 2.4 or I have it on only 1 AP and absolutely no complaints about wifi since I did that.

My guess would be yes. Most of those released 2015-2016. We've since seen their 3rd gen products released around 2018 with the HD products, and now the UAP6 devices are starting to trickle out. Doesn't really make sense to keep promoting the older stuff.

https://help.ui.com/hc/en-us/articles/360012192813#faq-device-gen

In theory, you could even update the firmware on the UAP, in the future, by pre-downloading it on a device that presents it via a URL and then join that device to the aloha network.

But that would be excessive amounts of work.

Possibly the app could do it on an iPhone/Android device with LTE that is also joined to the aloha wifi.

@JaredBusch said in Unifi AP refusing to upgrade:

@Dashrender said in Unifi AP refusing to upgrade:

@brianlittlejohn said in Unifi AP refusing to upgrade:

Did yall notice that the new update has the ability to export and import individual sites instead of the entire config?

didn't JB post about that a week or so ago?

Nope.

I must have just read it in a released then.

I heard back from them. They aren't sending anything unless I actually experience a problem.