A few developers on and 4pda (Russian forum) took up the challenge. The first breakthrough came from a developer named Asvene (and others like GonkLord ). They managed to:
Samsung Galaxy J1 Ace (SM-J110H) is an older device that typically runs Android 4.4.4 KitKat out of the box, with official updates reaching up to Android 5.1.1 Lollipop. Sm-j110h Custom Rom
Based on Android 4.4.4, this is one of the more stable options for providing a near-stock Android experience. A few developers on and 4pda (Russian forum)