HOW TO INSTALL Cyanogenmod 12.1 ANDROID 5.1.1 on S3 I9305

CyanogenMod is a free, community built, aftermarket firmware distribution of Android 5.1 (Lollipop), which is designed to increase performance and reliability over stock Android for your device.

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#include
/*
* Your warranty is now void.

* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you. Hard. A lot.

*/

CyanogenMod is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. CyanogenMod does still include various hardware-specific code, which is also slowly being open-sourced anyway.

All the source code for CyanogenMod is available in the CyanogenMod Github repo. And if you would like to contribute to CyanogenMod, please visit out Gerrit Code Review. You can also view the Changelog for a full list of changes & features.

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IMPORTANT INFORMATION

We'll not support users and answer questions from users which:

- are running a custom kernel

- have flashed mods

- modified system files

- didn't follow our instructions word by word

- are unfriendly

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INSTRUCTIONS

WATCH HERE THE INSTALLATION VIDEO

First time installing CyanogenMod 12.1 to your Galaxy S3 I9305, or coming from another ROM:
- Read known issues ans FAQs
- Flash one of the recovery images (CWM or TWRP)
- Copy GApps and CM12.1 ZIPs to your SDCard
- Boot into Recovery
- Flash CM12.1 zip from SDCard
- Flash GApps zip from SDCard
- DO A DATA WIPE / FACTORY RESET (otherwise your device will be stuck at boot)
- Reboot
- Don't restore system data using Titanium Backup!
- Restoring Apps + Data might cause problems and is not recommended, avoid it if possible!

Upgrading from earlier version of CyanogenMod 12.1:
- Copy CM12.1 ZIP to your SDCard
- Boot into Recovery
- Flash CM12.1 zip from SDCard
- Reboot

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Working:

Wifi
Camera
Bluetooth
3G
Sensors
Home Button Wake
GPS (maybe)
RIL
Carrier APN
Keyboard on first boot
Added HDMI support but not sure if it works

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Not Working

Snapchat/Instagram video uploads

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DOWNLOADS

  CM 12.1 :  http://adf.ly/1Pf5wr

Gapps :     http://adf.ly/1Pf6ps

How to root s3 LTE : https://youtu.be/ESlxLilCCuI