mine still works after the update. Make sure your remote is pointing at the 360. Also, I have noticed that if it goes out of sync, I sometimes have to manually push the button the next time. For example, when I shut the 360 off and it doesn't actually shut off with the remote, the next time I find it won't power on with the remote either. So I power it down manually the first time, power it on manually the 2nd time and then it seems to be back in synch.

Can't guarantee it will work, but it has for me.