White screen of death

I have just tried to update the firmware of my M6 to version 2004.3 copied the files across, restarted the player and now all that shows is a white screnn and will not respond to anything.
Before someone says to search the forums i have.
So far i have tried holding down the M for about 2 minutes - no response
tried holding down M and the power button and pugging into my PC, while holding for about a mintue the PC doesnt respond and doesnt show in My Computer of Device Manager.
Tried holding down >>| and power to hard reset, 2 minutes and nothing.
Tried holding down |<< and power to see if it would format and nothing again.
DFU tools wont recognise either

If anyone has any suggestions at all as the M6 is a a great player and i have high respect for Meizu. So any suggestions no matter how bizare will be considered.
Thanks