Hi i am still currently on MIUI-JLB7.0 and i wanted to upgrade my ROM, but i have some questions. JLB 14/15 are they stable without any battery life drain or any other problems? Also what does this mean: "IMPORTANT : Once you updated to QDT07/JLB14/3.3.29 Then you can't downgrade to earlier versions of V5 or V4." So if i upgrade to say JLB15 (just released i believe) i cant download and install Miui v5 / v4 i will have to wait for Miui v6 to be able to install a Miui ROM, right...? Also what ROM is the QDT07? and lastly if i install WIUI ROM can i still change it to JLB15 afterwards? Or if i install JLB15 then can i change it to WIUI? PS anyone have problems with WIUI, i see that the ROM hasnt been updated since February, will a new version come out? Thank you for any help.