CallManager Active Version: 188.8.131.520-3
Inactive Version: 184.108.40.20600-1
Administration Version: 220.127.116.11-1
Just received new 7937 with no worthwile instructions in the box. Only a End User License, compliance, warranty, and a single page document written in what appears to be chinese.
Went on line and located the readme file for Firmware version 1.2.1. According to the documents cmterm-7937-sccp.1-2-1.cop.sgn will work with my version of Call Manager.
I followed all the instructions for downloading and installing the software on the call manager. According to the install process the file was successfully installed. I stopped and restarted the TFTP services and the phone does not show up in the list of available devices to add.
How do I get this paperweight to actually work?
You won't love this given what you have already had to go through, but I thought you should see it anyways. Unfortunatly the 3550 - 24 PWR only supports Cisco prestandard PoE and the 7937G requires IEEE 802.3af PoE . Here are a few reference docs with this note;
Cisco PoE Product Snapshot
24 10/100 Cisco prestandard PoE ports and 2 GBIC-based Gigabit Ethernet slots
The Cisco Unified IP Conference Station 7937G is interoperable IEEE 802.3af PoE (Class 3 device); 48 VDC is required; it can be supplied locally at the desktop using an optional AC-to-DC power supply (part number CP-PWR-CUBE-3=). Use of the power supply also requires the Cisco Unified IP Conference Station 7937G Power Splitter and one of the corresponding AC country cords
Power over Ethernet (PoE) Power Requirements FAQ - This shows other Class 3 IP Phones that won't work on a 3550 (the 7937 is too new for this doc, but you see where this is going)
Hope this helps! (I know its a bummer :(