[andrewned]

Yep, the battery was primary suspect and this time I've been using professional charger that can start a nuclear submarine. I was sitting in the car not touching anything and almost not breathing all the time, watching progress indicator. No additional power drain (radio/whatever) was on. Even my cell was off:)
Most probably we can eliminate battery here. The only thing that maybe there wrong is bad ground on ECU.. I will check it ..
but how Ford managed to flash it???