Most Android devices have a fail-safe button press combination that'll flash a ROM named "update.zip" from the micro SD slot without any user intervention. If your boot loader isn't totally corrupted, you might be able to resuscitate it yourself. I salvaged a dead Acer Iconia A200 that bricked itself updating to ICS for a friend by holding the down-volume button while turning it on with the ICS update on the micro SD.
"And and if you start to bleed, stop wiping." -whm1974