My Pre³ went dead on me about a week ago. I've tried the advices given in here but since it's DEAD as it can be, no luck for me. I have several batteries so that's not the issue. Tried the connecting-to-power-source_holding-power-button_flicking-mute-switch-3x and nothing.
Man, I'm on my Pre+ with no mic, nor earphone, NOR speaker working! I installed a couple of patches and suddenly the wifi is not working as well (uninstalled the "top bar" and wifi related patches, but it doesn't work still).
I tried to let it all drain (which since it gives no sing at all, don't really know if it's already drained) and plugged it to a power source and no signs of life, STILL!
If someone could help, would be deeply appreciated.