update miui rom on mi2a

Jun 3, 2013

i'm new on this forum and kinda have a problem. This is the first time i meet android and i'm trying to install the taurus rom because i can't access google play store now. I have read the tutorial about upgrading miui but i'm kinda stuck in this one. I have downloaded the rom, but when i try to mount my sd card and i'm going to the notifications section there is no sd card to be mount, there is no sd card popped up in the screen, so how can i mount it then? Also there is no rom manager on the phone and i can't find it in the miui market (most things i can't find in the miui market). I hope you can help me because i think the phone is a beast, i just want to access al its features, thank you