Where are you stuck? Is the phone downloading th phoneload, ..?
Does the phone have the correct settings (DHCP, TFTP, ...)?
BTW: tftp opens high ports, the other post mentions the ports.
Prior to OS 2000.2.7 the ports picked up by the call manager were in the range 1024-4999 and now from 2000.2.7 the ephemeral ports in the range 49152 -65534 need to be opened for the communication between the phones and TFTP to work properly and also for other communications.
The Ephemeral port range is 32768 - 61000 for 6.X (linux).
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