Update Galaxy S3 i9300 to Android 5.0 Lollipop AOSP ROM

Samsung Galaxy S3 is considered to be the tendency setter for Android devices that have followed since the beautiful smartphone. While the device has received accolades of praise and love from fans and critics, it has lacked similar level of patronage from Sammy itself. Samsung didn't send KitKat updates to Galaxy S3 citing lack of RAM on the device. The device has 1GB of RAM while Android 4.iv KitKat can support fifty-fifty the 512MB RAM devices. Expecting no lollipop love from Samsung for Milky way S3 as the latest OS build definitely requires stronger specs, there are still way to proceed your device up to date.

[Update]: Flash CM12.1 Android 5.i Lollipop on Samsung Galaxy S3 I9300 - Complete Guide

Update Galaxy S3 i9300 to Android 5.0 Lollipop:

Whether Samsung or any other OEM for that matter sends the Android update to devices or non, developers accept their own ways of working things out. XDA developerarter97has created a working build of Android v.0 Lollipop AOSP. The AOSP build ensures that you don't suffer from TouchWiz bloatware too every bit it is based on the original Android sources.

Equally with flashing any custom firmware, there are some basic precautions and prerequisite steps:

Backup whatever important information from your Samsung Galaxy S3 GT-I9300.
Enable USB debugging option on your device:Settings >DevelopmentOptions >USB debugging.
Samsung Milky way S3 must be rooted, unlocked and installed with a recovery tool like TWRP or CWM.
Your device must be charged to at least 60% of power.

Later downloading the firmware nix file from link shared below, you can update Galaxy S3 i9300 to Android 5.0 Lollipop AOSP custom ROM. Yous shouldn't attempt flashing a custom ROM if you aren't familiar with the process. The current AOSP Android 5.0 Lollipop custom firmware is in Alpha phase which means there would be more usual bugs and problems in the build. Expect sooner fixing of all the current problems of the AOSP Android five.0 Lollipop as these custom firmwares are constantly updated with fixes and system improvements. Here is the XDA thread to help you flash this custom firmware.