iphone 3g dead (error 9) after software update to 4.0.1


macrumors newbie
Original poster
Jul 23, 2010
my iphone 3g 16GB is dead after i did the software update to 4.0.1 via itunes on my mac book. i am constantly getting the "error 9" message. tried several solutions posted ("recboot" e.g.) - no one did work so far.

any new solutions??
Feb 15, 2009
Boston, MA
yes i have and i already tried DFU mode. did not work.
According to Apple:

Error 9: This error occurs when the device unexpectedly drops off of the USB bus and communication stops. This can occur if the device is manually disconnected during the restore process. This issue can be resolved by performing USB isolation troubleshooting, using a different USB dock connector cable, trying another USB port, restoring on another computer, or by eliminating conflicts from third-party security software.