hey Ehab..
did u follow all the steps while updating..
clearing dalvik cache etc.. ???
download the rom again and re install it...
it should work.. !!!
Guys..
today twice I got this update ..
so I clicked on it and it asked me to activate xiaomi account so I click on that too
and then the webpage that opens is in Chinese..
so now what to do.. ???
and what is this stuff.. ???