How to Install Stock ROM on ZTE Big ZR01 Z7750R [Firmware Flash File]

Did you brick your device or Want to fresh install the firmware file on ZTE Big ZR01 Z7750R? then you are in the right place. This device is powered by a Qualcomm processor. To install the firmware file on Qualcomm powered device, you need software known as QFIL Tool, Formally also called Qualcomm Flash Image Loader. Make sure to download the required flash files, flash tool, and drivers to successfully flash the firmware on ZTE Big ZR01 Z7750R.

Android always opens the door to various possibilities such as flashing custom ROM or kernel or APK modding etc. These feats can be achieved by providing root access to your device or simply rooting your phone.  In today’s date, rooting or customizing is no rocket science, but people perform these process carelessly. Certain users hastily carry out the modding/rooting process without properly following instructions. It leads to bricking of the device. It can happen with any device. In this post, we will tell you how you can restore or unbrick ZTE Big ZR01 Z7750R back to the previous working condition.

How to Install Stock ROM on ZTE Big ZR01 Z7750R

How to Install Stock ROM on ZTE Big ZR01 Z7750R

The guide is simple and easy! All you have to do is simply download the below-given firmware files and tools on your PC and then follow the given instruction to install the Stock ROM on ZTE Big ZR01 Z7750R using QFIL Tool. Yes, this guide is also helpful to recover, unroot or fix any software malfunctioning problem. Remember this guide is also very much needed in case of upgrade or downgrade the firmware on ZTE Big ZR01 Z7750R. First of all, download the software, Qualcomm Flash Image Loader on your PC and then flash your phone back to Stock ROM. We request you to read the steps carefully before upgrading ZTE Big ZR01 Z7750R using this guide.

The Advantage Of Stock ROM:

  • Flash Stock To Unbrick your ZTE Big ZR01 Z7750R
  • Flash Stock ROM to Fix the boot loop problem
  • Upgrade and Downgrade ZTE Big ZR01 Z7750R
  • Unroot or Fix Bugs on your phone
  • To fix the lag or stutter on ZTE Big ZR01 Z7750R
  • By flashing Stock ROM, you can solve software problems.
  • Revert back to stock to gain your warranty.


So before jumping into the manual upgradation setup, please make sure you have a good amount juice with at least 80% Charge. If not please charge the phone. Backup your phone in case if you need it later. If you brick the device we are not responsible. Do it at your own risk. Remember this guide is to update the Stock ROM on ZTE Big ZR01 Z7750R .

Firmware Details:

  • Gapps File: Included
  • Device Supported: ZTE Big ZR01 Z7750R
  • Tool Supported: QFIL

Download Firmware

Download Link Descriptions
Download Z7750R [ Japan ] 393530B1116PV_ZTE_Z7750RV1.0.0B11 [

Steps to Install Stock firmware on ZTE Big ZR01 Z7750R :

Before installing, make sure to follow the pre-requisite and install the necessary drivers and tools on your PC.


  • Supported device: ZTE Big ZR01 Z7750R
  • Charge your phone: You need at least a 50% charge on ZTE Big ZR01 Z7750R
  • Laptop or PC: To carry out this installation, you need a PC or Laptop.
  • Take Device Backup: The very first thing to pay attention to is taking the device backup. You might not be able to take the backup of phone data, however, if you have inserted a memory card in your device, remove it at least to save it.
  • Qualcomm Flash image loader: Download QFIL Tool || Download QGDP Tool
  • Install Latest Driver: Install the Latest ZTE USB Drivers.
  • Download: Download the above-required files on your PC.

[su_note note_color=”#fbf5c8″ text_color=”#000000″]

Disclaimer: We at cannot be held responsible if anything goes wrong. Take your own risk!


Install via QFIL Tool:

Download Qualcomm Flash image loader tool and USB Drivers on your PC. Follow the below link to install the firmware using QFIL tool

Guide to Install Stock ROM using QFIL Tool

If the above method doesn’t work, then use the below QGDP tool

Guide to Flash Stock Firmware using QGDP tool

I hope you installed the Stock ROM on ZTE Big ZR01 Z7750R successfully, Now please rate this website with your comment. We always welcome feedback and improvements.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.