now that you have clock work mod installed
boot into it by holding volume up and the power button, do this while the phone is in a powered off state
once you get into CWM
navigate by using the vol up and vol down keys
use the camera button as a select button
from the main menu of CWM
highlight mounts and storage
and select
highlight mount the USB storage
and select
plug phone into computer USB port
you should get a new drive on the computer like F: drive or something
now on your computer go to this thread and download the ZW-RTS-FOR-CWM-19-0B08C.zip
http://androidforums.com/warp-all-things-root/521024-return-stock-cwm-updated-4-11-a.html
copy the ZW-RTS-FOR-CWM-19-0B08C.zip to the new F: drive (or what ever the new drive is)
once it is done copying
in CWM press the back button (bottom arrow button) until your at the main menu of CWM
highlight install zip from sdcard
and select
highlight choose zip from sdcard
and select
highlight the ZW-RTS-FOR-CWM-19-0B08C.zip
and select
highlight yes install ZW-RTS-FOR-CWM-19-0B08C.zip
and select
it should now install the ROM, it will also remove CWM (after reboot)
press back button until you are at the main menu of CWM
highlight reboot system now
and select
the system should boot up now, and it will be a fresh install, just like when you first got the phone
remove your sd card before sending to ZTE, you have to remove the battery cover and battery to do that
.