Does I9300XXUGMJ9 mean anything to you? It should if you own the international version of the Samsung Galaxy S III, GT-I9300; those letters and numbers represent the build version for the first leaked version of Android 4.3 for the Samsung Galaxy S III. The build is said to be stable although there could be a few bugs nestled inside it...Source: http://www.phonearena.com/news/Android-4.3-update-for-international-Samsung-Galaxy-S-III-leaks_id49000
