Still havent found a solution for my dead W580i

[hot_spark]

try the KulanKendi Client guide here
REPAIRING EROM GUIDES for most sonyericsson phones - Top Sony Forums ,

if that doesn't work, you should get a service/cruiser cable or send the phone to se to fix.

I had the very same problem. NO software but KulanKendi did update my EROM... But unfortunately it didn't solve my problem :( .. so i suggest u to let ur service centre to handle it ;)