I'm surprised to hear that Luxul doesn't know about the issue. I am very familiar with the 3150 issue.

There was a manufacturing error affecting a decent amount of 3150s that triggers a memory dump upon reboot. This memory dump error was fixed with the latest firmware update.

I have so many 3150s deployed it would be too time consuming to go to each (that dont have VPN) and apply the update, so I just wait until I get the call and go fix it.

You have to get the 3150 emergency flash file from Luxul to flash the unit back to factory defaults (units affected by this hardware issue can't be reset with the button on the rear of the unit).

Once you flash the unit and re-set up the network and APs, update the 3150 to the latest firmware and you'll be good to go.

Call Luxul back, they know about this issue on the 3150s, have them walk you through the emergency restore file process.