We have shared the official ZTE Q503U Stock Firmware ROM (Flash File) on this page. The Stock Firmware comes in a zip package that contains the original Firmware, Flash Tool, Driver, and How-to Flash manual.
ZTE Q503U Stock Firmware (Flash File)
You can use the ZTE Firmware to Upgrade or Downgrade the Operating System (OS) of the device, Unlock or remove the device’s protection, Fix the IMEI-related issue, or Fix the bootloop problem.
How to Install ZTE Q503U Stock Firmware
- Download and Extract the ZTE Q503U Stock Firmware on the Computer.
- Once you have extracted the package, you will get the Firmware File, Flash Tool, Driver, and How-to Flash Manual.
- Install the given USB Driver on the Windows Computer.
- Once the Driver gets installed, Open Flash Tool on the computer.
- Once Flash Tool is Launched, Connect your device to the computer using the USB Cable.
- Click on the Download or Upgrade button on the Flash Tool to Start the Flashing process.
- Once the flashing process is completed, Disconnect your ZTE Q503U device from the computer and restart it.
[*] Caution: We do NOT recommend you to Flash the preloader.bin, as it may brick the device. Therefore, we recommend you Untick the Preloader option while flashing or installing the device’s firmware.
[*] Backup: We recommend taking a backup of your data before flashing or installing the Stock Firmware (ROM), as flashing the firmware will wipe the data from the device.
[*] Credits: The device manufacturer initially released the above firmware, and it is in its original state. We have scanned the firmware against virus/malware using Malwarebytes Premium.