Why can't I install update.zip on my HTC Sensation 4G?

[AC Question]

My boot loader is unlocked, I have CW recovery, but there is no rom on the phone and I'm wanting to install a rom. I've downloaded a CW Rom and have renamed it but it doesn't want to install.

 

[metomax]

My boot loader is unlocked, I have CW recovery, but there is no rom on the phone and I'm wanting to install a rom. I've downloaded a CW Rom and have renamed it but it doesn't want to install.

whats errror are you getting when trying to flash the ROM?