Recently upgraded 3CX from 12.5 to V14 without problems. Ran a couple weeks V14 and now I have upgraded to 15.5 SP1. I ran into some problems provisioning our Yealink phones and I'm looking for a little bit of help here. I upgraded the firmware on our phones to match the supported firmware and did a factory reset. When the phone appears in 3CX and I try to add it to an extension it doesn't do anything. I went manually into the phone and put http://IP:5000/provisioning/"randomname" and try to provision and nothing happened. Then I tested it with https://IP:5001/provisioning/"randomname" and it did the provisioning at least partially. The phone didn't pull the wallpaper like it used to. I'm using stock template. Any ideas?