im trying to downgrade firmware to install a custom rom (MIUI) i follow all the steps from here: http://wiki.cyanogenmod.com/wiki/HTC_Desire_Z:_Firmware_Downgrade_(Gingerbread) everything works fine until the end. my phone reboots, bootloads the PC10IMG.zip then gives me a Model ID Incorrect! Update Fail! error. I've tried 3 different firmware images. they all do the same thing. is there a specific image for the Desire Z in Canada? I have a Bell Desire Z. since i have root access can i rename the MIUI image to PC10IMG.zip and install that?