On this page, you will find the official link to Download OnePlus One 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.
OnePlus One 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 Name: OnePlus One 16GB 5.1.1 QFIL.zip
File Size: 768 MB Download Now 768 MB
How to Flash or Install Firmware (ROM)
1 . Download and extract the OnePlus One stock firmware package on the computer.
2 . After extracting the package, you will be able to get the Firmware File, Flash Tool, Driver, and How-to Flash Guide.
3 . Install the provided USB Driver on the Computer (if the USB Driver is already installed, then SKIP this step).
4 . Follow the How-to Flash Manual to Flash or install the Firmware on your OnePlus One device.
[*] Take a Backup: If you are going to flash or install the above Firmware on the OnePlus One device, then take a backup of everything because your data will be deleted or removed post flashing or installing the Firmware.