Wrong HTC phone type attached to android market I have a htc desire z and accidently put htc vision
How can it be changed.

I cannot download a program from android market for my phone as it thinks is a Htc vision
The HTC Vision is the Desire Z, it is also known as the G2 on T-Mobile.

This is basically the name that HTC gives the device before it sells it to carriers. Some carriers want it rebranded. I also believe that HTC decided to publicly call the Vision the Desire Z, but I assure you, they are the same device.