Bought my phone with this rom already installed.
Tryed 3 times to downgrade like you but at the end of point 4) the answer was : "Main version is older!".
Can you help me?
PS:
CP2DUG PVT2 SHIP S-ON RH
HBOOT - 0.74.0000
H6S PWM - 3.55.8
H6S SOC - 1010
eMMC - boot
Nov 6 2012 , 12:45:51
If you followed the previous 3 points, I think the only reason is that I came from a modded custom rom (the one posted by yaruq firstly, and then the rom posted by SPSPaWn) .. so the system allowed me to downgrade; while it seems your situation is different from mine
I don't know if your rom is a stock one or not .. I don't know if it is deodexed or not, rooted or not, and so on
If you can't downgrade, then try to:
1) re-unlock bootloader
2) flash custom cwm recovery (you can find it in this thread)
3) full wipe
4) flash a custom Rom
And then try to follow the steps I indicated
Regards
Inviato da Xiaomi Mi2 con tapatalk pro 2