Cyanogenmod 12.1 ROM Download is a custom ROM for Android devices. This is free and extends the capabilities of your device with themes, greatly enhanced privacy functionality and all sorts of UI / UX settings. If you have a rooted device, installing CyanogenMod is incredibly simple. The CM team has created an application called CyanogenMod Installer, which allows you to download and update ROMs with minimal technical knowledge. We will guide you here. Be sure to back up your data before proceeding.
- Download and put the ROM zip on your phone.
- You must use an SELinux enabled recovery. (CWM 188.8.131.52, TWRP 2.8/3.0). If not install that first and then proceed.
- Go to recovery, wipe data/cache. (Yes you will need to do a data wipe even if you are upgrading from CM-12.1 to incorporate ROM changes).
- Flash ROM.
- (Optional) Flash apps.
Step 1: Download CyanogenMod Installer
Visit get.cm from your Android device and download the .apk file.
Step 2: Enable Unknown Sources
Go to Settings > Security > Check Unknown Sources
Step 3: Install the App
Open the .apk file that you downloaded earlier, and install it.
To install the CM12 Marshmallow ROM, you may need an unlocked bootloader on your device. Here is a bootloader unlock guide that works for most devices. In addition, the CyanogenMod 12 ROM does not come with installed Google applications and, therefore, requires the firmware of a separate GApps package after flashing the CM12 Marshmallow ROM. Here is the download link for CM12 Marshmallow ROM GApps. Also, consider creating a full backup of all your phone data to be more secure. So let’s check the list: