Hi, I am testing a Yealink SIP-T22P phone with 3CX. The phone came with outdated firmware. I was able to provision it but when I try to update the firmware from 3CX the phone will reboot without pulling in the new version. I was able to update to a newer revision from inside the phone's web interface so I know the phone is good. I followed the directions here and you can see from the comments that others are having this issue: http://www.3cx.com/blog/ip-phone-configuration/upgrading-firmware-yealink/ I'm using 3CX 10 SP6 and firmware 18.104.22.168 on the phone (trying to upgrade to 22.214.171.124). Here is what the log shows with my MAC addresses stripped out: 16:22:50.396 Subscr. terminated for from MACxxx@126.96.36.199 16:22:50.396 New SIP device is on-line: MACxxx; ip=192.168.1.208; contact=sip:MACxxx@192.168.1.208:5060 16:22:50.377 [CM302001]: Authorization system can not identify source of: SipReq: SUBSCRIBE MACxxx@188.8.131.52 tid=1932254762 cseq=SUBSCRIBE contact=MACxxx@192.168.1.208:5060 / 1 from(wire) 16:22:49.345 [CM504001]: Ext.116: new contact is registered. Contact(s): [sip:email@example.com:5062/116] Any ideas? What other info do I need to provide? Thanks.