Hello everyone
I have a iphone 3gs 32gb, it was syncing fine now it will not sync. I don't understand when I plug it in to the usb port it turns on the iphone, and goes into recovery logo, but Itunes and computer dosen't see it.
This I tried already

• restarting apple mobile devic, in services
  holding down home button when plugging in
  del the file sQlite3.dll ( I was told it will work no luck
  reinstalling os and itunes
  I tried to put the phone in dfu but had no luck, just recovery mode
  Please any help

- change usb cable