I've just upgraded v14 to v15 (after a router failure and v14 behaving very oddly after the router was replaced). Now, it is sort-of working, but it's not right. The first problem is that my Yealink phone has firmware 220.127.116.11 (the latest from Yealink's site), but apparently there's a 18.104.22.168 available for 3CX users which should be available within 3CX (http://forum.yealink.com/forum/archive/index.php?thread-20381.html) The problem is that if I select my phone in the 3CX phones list, and press '+ Firmware', it says it's updated the firmware and the phone reboots, but it's still 22.214.171.124 If I go to Updates on the top bar, it says "Your system is up to date". I can't find a list of firmwares available anywhere in this version of 3CX, so I don't know if it's even got the latest firmware available. What's going on?