so i decided to update to the final mango build, i was on nodo. never updated to 7712. so everything was going fine until i got to step 7 of the 7712 update..( it siad installing updates). it seemed to be froze up there, wasnt moving. so i unplugged my phone from the pc and was going to try again... but that was a bad idea because now when i boot the phone up it goes right to the black updating screen... and my pc doesnt recognize it... i did make the back up but unsure how to flash it if my pc doesnt recognize my phone? what do i do?