There is one very good reason as to why the Galaxy S3 i9300 was not on the receiving end of an Android 4.4.4 update – limitation in its hardware. After all, the international Galaxy S3 model came with just 1GB RAM, whereas the South Korean variant sported double the amount of RAM in addition to LTE connectivity, which do go a long way in making the Android 4.4.4 KitKat update possible.
XDA Senior Member arter97 alongside his team successfully assembled an unofficial ROM within hours, and do bear in mind that this ROM has its fair share of bugs considering how it remains in the early stage of development. Hopefully Galaxy S3 i9300 owners will be able to enjoy a fully working version of Android 4.4.4 KitKat sooner rather than later.