Although OnePlus One users have native CyanogenMod support, but still cm 12.1 update is miles away.
But this is an UNOFFICIAL CM 12.1 update for you guys.
WARNING:
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
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:
CM 12.1 download link for OnePlus One from oneplus forumCyanogenMod 12.1 ROM download link for OnePlus One
Google Apps flashable zip download link
Installing CyanogenMod 12.1 ROM:
STEP 1:
Copy the ROM and GApps zip file to your phone(By using a USB cable or via adb push command).
STEP 2:
Enter into recovery mode by pressing your device specific key combinations.
Or else if you are on a pc, then type the following command:
$ adb reboot recovery
STEP 3:
Wipe system partition, cache, data and dalvik cache (Only if you are coming from KitKat)
STEP 4:
Select the Install Zip from SDcard option.
Select the CyanogenMod 12.1 ROM file, let the installation complete and then reboot.
Complete the initial setup, reboot to recovery and then flash the GApps package and reboot again to enjoy Android Lollipop with CyanogenMod.