This is ZTE Blade Q3 (DTAC) official firmware. Flashing of this firmware package is done only via SDcard.
Do not hesitate to notify us if the download link is broken. Use the comment form at the end of this post.
ZTE Blade Q3 – Download
How to flash
To flash this update package on your smartphone, please follow the guide here https://www.leakite.com/2016/09/how-to-flash-zte-stock-rom-firmware-via.html