CyanogenMod is a free, community built, aftermarket firmware distribution of Android 5.1.1 Lollipop, which is designed to increase performance and reliability over stock Android for your device.
IMPORTANT INFORMATIONS
- Root is now disabled by default on CM12.1. To enable it go to Settings>Developer Options>Root access and set to Apps only or Apps and ADB.
- CyanogenMod 12.1 comes with Cyanogen Recovery by default, if you don't like it you can flash this zip to get TWRP recovery as an alternative
First time installation instructions:
- Download CM-12.1-XXXXXXXX-NIGHTLY-i9100.zip to your sdcard
- Make sure you're using a Kitkat Compatible Recovery
- Boot into Recovery
- Wipe all your data
- Flash CM-12.1-XXXXXXXX-NIGHTLY-i9100.zip from sdcard
- (Optional)Flash Google Apps.zip from sdcard
- Reboot