ZTE Blade A711 / X9 Stock Firmware | China ROM Flash File

The ZTE Blade A711, known globally as the ZTE Blade X9, is a mid-range smartphone from 2015 that featured premium qualities for its time, including a metal unibody and a rear-mounted fingerprint scanner. This official stock firmware is for the Chinese market version (`CN`) of the device. Flashing this ROM is the most reliable method for unbricking a device, resolving deep software corruption, or restoring the phone to its original factory state.

Important Note: This is an official China ROM and therefore does not include Google Play Services (Play Store). The device is powered by a Qualcomm Snapdragon 615 chipset, and the restoration process requires the use of the QFIL (Qualcomm Flash Image Loader) tool.

Quick Device Specs

Device: ZTE Blade A711 / Blade X9 (N939SC)
Release year: 2015
Chipset: Qualcomm Snapdragon 615
Display: 5.5″ FHD IPS LCD (1920×1080)
Battery: 3000 mAh (Non-removable)
Memory: 2GB RAM + 16GB storage
Camera: 13MP rear, 5MP front
OS: Android 5.1 (Lollipop)
Special Features: Metal body, Fingerprint scanner, No Google Play Services

Required Downloads

File / Tool	Download Link
QPST (QFIL) Tool	Download QPST Tool
Qualcomm USB Drivers	Download Drivers

Stock ROM & Firmware

Version	Android	Region	Type	Download	Size
1.10	5.1 (Lollipop)	China (CN)	QFIL / QPST	Download	~1.0 GB

Quick Flashing Guide

Download and install the Qualcomm USB Drivers and the QPST Tool on your PC.
Extract the downloaded firmware ZIP file to a folder on your computer.
Power off your phone and boot it into EDL Mode by holding the Volume Up + Volume Down buttons while connecting it to the PC via USB cable.
Launch QFIL, load the firmware files (`prog_…mbn` and `rawprogram/patch` XMLs), and click the “Download” button to begin flashing.

For a complete, step-by-step tutorial with screenshots, please refer to our definitive guide:
How to Flash Firmware on Qualcomm Smartphones with QFIL

FAQs

Q1. Can I install Google Play Store after flashing this firmware?

No. This is the official China ROM, which lacks the core Google framework. Manually installing Google Play Services on this old version of a Chinese ROM is very difficult and is not guaranteed to work correctly, if at all.

Q2. I have a Blade X9 from Europe. Can I use this Chinese firmware?

It is highly discouraged. Flashing this China ROM on a global Blade X9 will remove Google services and may cause network connectivity issues (‘No Service’) due to different modem configurations for Chinese carriers.

Q3. My phone gets very hot. Will a firmware flash help?

The Snapdragon 615 chipset is known for running hot. A clean firmware flash can help by removing any rogue software that might be causing excess CPU usage. However, the tendency to get warm, especially during gaming or charging, is a characteristic of the phone’s hardware.

Device-Specific Troubleshooting

Stuck on ZTE Logo (Bootloop): A bootloop is a common issue for this model. The most reliable solution is to perform a full firmware flash using the QFIL guide. This will erase all data but will install a fresh, working copy of the operating system.
Phone Boots up in Chinese: During the initial setup wizard, look for the language selection option, which is usually on the first screen and may be marked with a globe icon or the word `语言` (Yǔyán). You should be able to select English from the list.
No 4G/LTE Service Outside of China: This is an expected issue. The modem in this China ROM is configured for Chinese cellular network bands. It may not support the FDD-LTE bands used in Europe, the Americas, or other parts of Asia, resulting in only 3G or no service.
QFIL Fails with a “Sahara/Firehose” Error: This classic QFIL error points to a communication failure, usually caused by a driver problem. Reinstall the Qualcomm 9008 drivers (disabling driver signature enforcement in Windows first), use a high-quality USB cable, and ensure the phone is fully powered off before entering EDL mode.