It's troubling to know that with the bootloader intact, the keystroke fails. So in theory, if you hadn't enabled debugging, and therefore hadn't been able to send the command via ADB, you'd have been bricked?
I also can't help but wonder whether all of the keystroke sequences do exactly the same thing. -if ADB can send a successful command, then perhaps one of the sequences might work where another does not?
a) phone off, vol- then plug-in USB
b) vol + & vol - & power while USB is already plugged in
c) vol + & vol - then plug USB cable in
d) battery out(a)
e) battery out(c)
Clearly, I'm not in a hurry to test any of this.
Originally Posted by Phalanx7621
I know speaking from my experience with Omni, one of the downloads I flashed did kind of the same thing. I couldn't get into download mode at all. The key combination just wouldn't work. I ended up having to adb into download mode, but luckily could do so as I had already enabled adb debugging before the problem began.