Everyone one of you are really damn annoying. There are different phones, with different settings, with different things you can do on them.
- Volume Buttons. For some phones to get out you will have to press either volume up or volume down + power button for a couple of seconds.
- For the phones that have physical power buttons it might sometimes be home + power button.
- For phones that have removable battery covers, such as old samsungs and the such, you can either take out the battery or push the reset button if there is one (the reset button is like the ones you get on calculators if you've ever used one)
For phones that have jammed buttons -- for example mine, where the volume buttons are jammed, the phone does not have a removable battery cover or does not have a physical button -- All you can do is usually wait until the phone runs out of juice.
Also a piece of note: Most phones that have the *Install from ABD* option, there is usually a timer. For example mine stopped showing the installing from ADB and said that the installation failed, it did not actually fail though, it is made that way so if your phone breaks in some way and you cannot use any methods of the above, it will eventually get you out of the screen and automatically fail the update or install.
Is that better?