I think this is your only option:
I tried with this way: http://forum.xda-developers.com/show....php?t=2582142
but my computer can't see my phone, so I can't put any thing to my phone .
Did you try different drivers? I'm almost in the same boat. Only mine can get into download. But fails at 49% every god damn time. Tried many different ways. So I'm installing Ubuntu tonight (if I can) and trying that as my last option. Otherwise I'm selling it as spare parts.