Today I updated my MX4 to Flyme 4.5.4A. Everything works fine but a little slower I think, especaily in Antutu. With version 220.127.116.11A I got a score of 51000+ but now I wil get 41000 as max. I heard there is a new test firmware released (4.5.5). Does anyone know if and when the stable version will be released?