Androidbiits.com brings a glorious news for Samsung Galaxy S3 GT-I9305 users. According to winxuser, Android 5.1 Lollipop Unofficial CM12.1 [Alpha 3] Custom ROM is now available for Samsung Galaxy S III GT-I9305. In my previous post, I have written the steps for updating Moto G (2014) XT1063 to Lollipop 5.1 using CyanogenMod 12.1 [titan]. Now the glorious news is that GT-I9305 users can test CM12.1 [Alpha 3]. Today, I will write the simple instructions for updating Samsung Galaxy S3 GT-I9305 to Android 5.1 Lollipop using CM12.1 [Alpha 3]. This is really a glorious news for GT-I9305 owners who are bored with old firmware and planning to test Lollipop 5.1 on GT-I9305. CM12.1 [Alpha 3] may bring many improvements on GT-I9305.

I am expecting that Samsung Galaxy S3 GT-I9305 users will be able to install Android 5.1 via CM12.1 [Alpha 3] easily without facing any issue after reading the steps written in Androidbiits.com. CM12.1 [Alpha 3] requires rooted GT-I9305, so it is essential to root GT-I9305 before installing CM12.1 [Alpha 3]. Another crucial thing is CWM recovery installation on GT-I9305 before installing CM12.1 [Alpha 3]. You can perform all these works after unlocking GT-I9305 bootloader. Don’t forget that you may experience some bugs on GT-I9305 after installing CM12.1 [Alpha 3].

Androidbiits.com recommends that GT-I9305 users must take a backup of their data including videos before installing Android 5.1 via CM12.1 [Alpha 3], as there is a chance of data loss from their GT-I9305. If you are waiting for Lollipop 5.1, then you must use CM12.1 [Alpha 3] on your GT-I9305. The important thing is that CM12.1 [Alpha 3] will let you enjoy Lollipop 5.1 on GT-I9305. CM12.1 [Alpha 3] is released for ROM lovers who are waiting to test all features of Lollipop 5.1 on GT-I9305.

Below are the step-by-step tutorial using which you can install CM12.1 [Alpha 3]. Androidbiits.com will not take any responsibility if GT-I9305 got damaged during this process. GT-I9305 battery level must be more than 94% before following this tutorial.

How to Install Android 5.1 Lollipop CM12.1 [Alpha 3] Custom ROM on Samsung Galaxy S III GT-I9305 [Tutorial]

1. It is the time to download CM12.1 [Alpha 3] for GT-I9305.

2. Gapps must be downloaded for GT-I9305.

3. It is the proper time to activate USB debugging.

4. It is the time to attach GT-I9305 with desktop.

5. It is the time to transfer CM12.1 [Alpha 3] and Gapps to GT-I9305.

6. It is the time to switch off GT-I9305.

7. It is the time to remove the USB cable from GT-I9305.

8. It is very crucial to put your GT-I9305 into Recovery Mode.

9. It is the time to click “wipe data/factory reset” on GT-I9305.

10. It is the time to click “wipe cache partition” on GT-I9305.

11. It is the time to click “install zip from SD card” for installing CM12.1 [Alpha 3] on GT-I9305.

12. It is the time to choose CM12.1 [Alpha 3] on GT-I9305.

13. It is the time to install CM12.1 [Alpha 3] on GT-I9305.

14. It is the time to go to the main menu on GT-I9305.

15. It is the time to click “reboot system now” on GT-I9305.

16. It is the time to wait until GT-I9305 reboots.

After your S3 GT-I9305 is rebooted, you can test CM12.1 [Alpha 3]. If you are facing difficulty while installing CM12.1 [Alpha 3] on GT-I9305, then don’t hesitate to share your issue with Androidbiits.com.