Hi mates , i tryed all v6w rom have the led and audio bug, you must use the stable multi :
http://media.celogeek.com/roms/android/miui/3.12.6/miuiandroid_multi_HM2013023_3.11.29_jb-4.2.zip
All rom Hm2013023 are stable 3 so you have led and recording working.Also if you flash only miui recover...