BUILD_NUMBER=3.9.20
android: 67a32c7888b9e8431d7cbdd44a0f1561557cd8bc
build: 67b31d53616ffb98df8fac39420ffb61a2122f62
miui: cddd22c807de9702d6352b8d4fa875fffbdc05ab
onex: e0450d8516b14653a1c87ac4c269cc4e6b8d8912
exm: 6afb16ee20127d02e3fb42c1ea93c6daa656967d
tools: 2702ffb8d17ac6e54a16cc248e9c5a0fccda7e4d