I use fastboot to flash ROMs.
Put the room in the same directory as fastboot
Boot your phone into bootloader. You can use [adb reboot bootloader]
Make sure the device it's connected by typing [fastboot devices]
To flash a ROM type [fastboot flash <name of file> <name of file>.zip
Make sure to have the .zip at the end.
Sent from my XT1032 using Tapatalk