Your PS3 is not bricked!
If it gets stuck at the startup all you have to do is to follow these steps:
1. Turn off your ps3.
2. Turn it on, but hold the button in until you her 2 beeps.
3. You should see this:
Now you have to press Option 3!
4. Wait for your ps3 to be done.
5. Have a 3.55 downgrader from
www.rebug.me in your USB -> "PS3" -> "UPDATE"
6. After you have follow these steps, then you should be good to go.
If your ps3 does not open what you see on the picture, then I am sorry to tell you that it's bricked!