ok this guide is tanks to boricuakiller junkie2100 and SupeR i just put things together
1 download and flash this zip by SupeR
https://www.dropbox.com/s/oc97ykhdmfr49fn/SupeR_Updater_backtoStock.zip?m
2 flash it on cwm
3 reboot and flash stock recovery whit junkie root tool once is done
4 power of the phone
5 download zte update tool
https://www.dropbox.com/s/ckxjavki4...Software_Online_Upgrade_Tool_EXE_-_26.6MB.zip
6 isntall it then open it go trhu proses is goig to ask you to get on ftm mode
hold power botton and volume up same time
7 once is on ftm mode conect device to computer and complete process
after the zte updater tool is done your phone is going to be b7 complete stock no root no cwm
8 enjoy
1 download and flash this zip by SupeR
https://www.dropbox.com/s/oc97ykhdmfr49fn/SupeR_Updater_backtoStock.zip?m
2 flash it on cwm
3 reboot and flash stock recovery whit junkie root tool once is done
4 power of the phone
5 download zte update tool
https://www.dropbox.com/s/ckxjavki4...Software_Online_Upgrade_Tool_EXE_-_26.6MB.zip
6 isntall it then open it go trhu proses is goig to ask you to get on ftm mode
hold power botton and volume up same time
7 once is on ftm mode conect device to computer and complete process
after the zte updater tool is done your phone is going to be b7 complete stock no root no cwm
8 enjoy