Officially the OnePlus One was launched with CyanogenMod 11.
But later on OnePlus team has taken a step further ahead to provide you more customized Oxygen OS for your device to add liveliness to the device.
Installing custom ROM requires a custom recovery to be installed on your device, which may VOID your warranty and may delete all your data.
Before proceeding further you may consider backup your all data.
Please visit the Disclaimer page below to agree with the risks involved and proceed before flashing this ROM to your phone:
ROM Disclaimer link
Files needed for this installation:
Installing Oxygen OS:
Copy the ROM zip file to your phone(By using a MTP mode or via adb push command).
Enter into recovery mode by holding down both the volume down key and the power button key combinations.
Or else if you are on a pc installed with fasboot and ADB binaries, then type the following command:
$ adb reboot recovery
the first thing you want to do is a factory reset.
This step will delete all your user data.
Consider backup your data out of your phone from the below link or from other source.
Data Backup guide
After the wipe, go to install and find oxygenos_1.0.0.flashable.zip. Then confirm flash.
That’s all guys… Have fun and enjoy the Oxygen OS on your OnePlus One.
Stay tuned to get more updates