Someone should confirm asap, but I would think this is now broken, as the PS button now has to be held down to get the power off menu up, as tapping it brings up the XMB.
I posted this on the IR2BT forums but I thought I'd post it here too.
In firmware 2.50, the following change was made:
It's now possible to select this to turn off after an hour of inactivity. No more power-off sequence is needed (the only real issue with IR2BT)!
Simply change your Harmony power-off settings to leave the device on when you change activity or press standby, and let the PS3 do the rest for you -- this way you're guaranteed that the PS3 will turn off, and the power-off sequence won't fail...
On your PS3, go to: Settings > Power Save Settings > System Auto-Off
Make sure you tick "Turn Off System Automatically Even Under Special Conditions"
That will turn the PS3 off even if you're in a game or watching a movie. It's probably better to increase the timer to 2-hours if you don't intend to touch the controller when watching a movie, although I haven't tested this out yet so I'm un-sure how it works -- I imagine it turns off regardless of what you're doing if you tick the above box. You may find it easier to leave the box un-ticked and remember to quit back to the main XMB after you've finished playing a game or watching a movie to avoid confusion.
This suits me far better than a discrete power-off, since I like to switch between activities on my Harmony and it annoyed me that it always turned the PS3 off even if I was just checking the TV for a couple of seconds. I appreiate that this solution isn't perfect for everyone, but I imagine that the majority of people will much prefer this solution compared to a power-off sequence.
Make sure you set up [email protected] to put your PS3 to some use whilst it's idling.
I bought 2 IR2BT's originally (one for my bedroom and one for the living room), but my step-dad isn't all that keen on it and it's a waste when someone may really want one.
I'd be willing to sell mine if the price is right... Send me a PM if you're interested and I'll post a classified thread with all the information in.