On this page, you will find the official link to download ZTE Optus X Vista Z6621O Stock Firmware ROM (flash file) on your Computer. Firmware comes in a zip package containing Flash File, Flash Tool, USB Driver, and How-to Flash Manual.
ZTE Optus X Vista Z6621O Stock Firmware (Flash File)
The Flash File will help you Upgrade, Downgrade, or re-install the Stock Firmware (OS) on your Mobile Device. In addition, the Flash File (ROM) also enables you to repair the Mobile device if facing any Software Issue, Bootloop Issue, IMEI Issue, or Dead Issue.
File Size: 1.39 GB
Flash Tool: SPD Flash Tool
How to Flash (install): Follow Tutorial
How to Flash or Install Firmware (ROM)
- Download and extract the ZTE Optus X Vista Z6621O stock firmware package on the computer.
- After extracting the package, you will be able to get the Firmware File, Flash Tool, Driver, and How-to Flash Guide.
- Install the provided USB Driver on the Computer (if the USB Driver is already installed, then SKIP this step).
- Follow the How-to Flash Manual to Flash or install the Firmware on your ZTE Optus X Vista Z6621O device.
[*] Flash Tool: If you wish to download the latest version of SPD Flash Tool, then head over to the SPD Flash Tool page.
[*] Take a Backup: If you are going to flash or install the above Firmware on the ZTE Optus X Vista Z6621O device, then take a backup of everything because your data will be deleted or removed post flashing or installing the Firmware.
[*] We have scanned the above firmware (ROM) package against viruses/malware using Malwarebytes Premium. You can also use Malwarebytes to scan your computer against viruses/malware.