The official firmware update based on Google’s latest OS may not be available for the Samsung Galaxy S3, but thanks to XDA developers making custom ROMs, it is possible to install Android 5.0 Lollipop on the device.
Specifically, the Android 5.0 Lollipop custom ROM is available for the Samsung Galaxy S3 units that are powered by Exynos processor.
The firmware is compatible only with the S3 units bearing the model number GT-I9300.
According to the custom ROM’s page on forum.xda-developers.com , the firmware is a “heavily Work-In-Progress ROM and users cannot expect it to “be a daily driver anytime soon.” Before proceeding to install Android 5.0 Lollipop on Samsung Galaxy S3 GT-I9300, it is important that the device is already rooted.
The bootloader had to be unlocked already.
It is also important to install Philz Touch recovery before the upgrade process.
Below are some of the information available for the Android 5.0 Lollipop custom ROM for Galaxy S3: Contributors : arter97 ROM OS Version: 5.0.x Lollipop ROM Kernel: Linux 3.0.x ROM Firmware Required: Kernel for Android 5.0 Lollipop Based On: AOSP Since it is an unofficial released, Galaxy S3 users are advised to be very extra careful when following the installation procedures.
Get the detailed step-by-step guide on how to install Android 5.0 Lollipop custom ROM on this post from TheBitbag.com.
Samsung Galaxy S3 users should know that using an unofficial firmware might damage the device if there are any interruptions or mistakes made during the upgrade process.
Also, bugs and firmware issues are to be expected when installing custom ROMs that are still in development.
The battery should be checked first.
The smartphone needs to have 80 percent battery level or more before updating to Android 5.0 Lollipop custom ROM.
Also, since the smartphone needs to be connected to PC, the appropriate drivers for the smartphone should be installed on the computer beforehand.