Hi guys, I tried to update my razr hd to KitKat following the usual guides, immediately after unlock de fastboot the phone died.

I can't turn on, I can't charge the battery, nothing happen.

I tried turn on in all ways. Pressing volume down + holding home button, volume down, volume up and holding home button, and there is no life signal. I tried to connect to the pc and do something like show the device with RDS Lite, but the pc doesn't recognize the phone.

Anyone know another way to revive the phone?

Thanks!