So after reading the forums in depth and charging the phone for 5hours, I finally got something which looked like life and then flashtool gave me this:
08/029/2014 01:29:30 - INFO - Checking header
08/029/2014 01:29:30 - INFO - Ending flash session
08/029/2014 01:29:30 - ERROR -
08/029/2014 01:29:30 - ERROR - Error flashing. Aborted
08/029/2014 01:29:31 - INFO - Device connected in flash mode
I'm not sure if battery died before it had a chance to fully turn on, any ideas what the issue could be?