1-Install CWM in fastboot mode (fastboot mode:hold vol+ and vol- power on insert usb cable,double click recovery.bat).
2-After copy rom to sd card.
3-install rom file in recovery mode (firstly wipe your devices[wipe data/factory reset,wipe cache partition])
How can i install rom file?:power off your device hold vol+ and power key and wait after select install zip from sd card>chose zip from sdcard and select r0_de-branded_hwu8185-update-signed.zip file
CWM install package Download HERE