I have an I-TEK 1GB mp3 player that looks much like this one
When I turned it on, it just said Welcome and it turned itself off immediately. I found this guide and tried it. First, I put it in the recovery mode and extracted it's firmware (it's one of those that contains usbmsc.sb). Then I downloaded the file you say at the begining to update it's firmware and followed your steps. Everything went OK, supposedly.
But now I can't turn it on nor put it in the recovery mode! It just does not respond to anything, now it's absolutely dead!
Ideas? What can I do?
Thanks