Start your phone in fastboot mode and connect to PC.Ĥ. Download OPO Toolbox version 5 which has CM11s inbuilt.Ģ. This process didn’t work sometimes, in that case, you can try the method you already used during CM12 installationġ. If everything will fine you’ll get Successful message, now reboot the system to start the installation. Select the CM11s Zip file and swipe right to start flashing.Ĩ. Tap on install and browse the CM11s Zip file which you transferred in the device’s internal storage.ħ. As soon as your phone will boot in recovery mode you will see the TWRP recovery window.Ħ. Start your device in recovery mode, to do so turn off your phone then press and hold power and volume down key together.ĥ. Connect your device to the PC and Put CM11s in the root of your device.Ĥ. Settings > Developer options > Android debugging.ģ. You may need to activate Developer options to do this: Settings > About Phone > Build number (Tap the build number 7 times, you’ll get a prompt as it gets close). Since this post is about removing CM12 and installing CM11 so I’m assuming that you already have the latest driver installed on your PC and also TWRP Recovery is installed on your OnePlus One. Return Back to CM11s from CM12 using the following method.Ģ. I’m recommending you please read the previous post which will be very helpful to understand this installation process. Before going any further please take a backup of your complete internal data because you will lose your data in this exercise. There are two methods to flash OnePlus One with CM11s ROM. Most of the steps involved in this post are already used in the CM12 installation process. If you aren’t happy or due to any other reason want to return back to CyanogenMod 11S this post will help you. I was pretty much satisfied with CM12, even currently it is in beta phase as it is more stable & featured than other ROMs. I have done this yesterday just for curiosity. Many people out there who has installed it on their One Plus One, but now are thinking to return back to KitKat and their reasons may vary. My last post was about how to install android Lollipop based CyanogenMod 12 on OnePlus One.

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