Unreal Engine 4.9 Preview

hi. i used unreal 4.8.1 and create games android platform and run in all device successfully. but i update my unreal engine from 4.8.1 to 4.8.2 .after update i cant run games on some device android.and on 4.8.3 it is and not run and crash on start game on device. this problem fixed on unreal 4.9?