i already unlocked my iphone and it worked perfectly!
But a friend of mine bought an iphone from the USA... First, i couldn't downgrade the phone with itune 3.0 or even 4.0... I must have the itune 5.0.
OK... i installed the itune 5.0 and as usual "SHIFT+RESORE" then "1.0.2"... the process begins but at the end itune tells me: " The iPhone could not be restored. An unknown error occured (1013)"... and then " itune has detected an iphone. You must restore this iPhone before it can be used with itunes".
When i open ibrick i boot the phone then the screen turns RED ( that mean that the iphone is "OK") and here the iphone turns Crazy!!! it begins to restart and show me lots a texts...
finally, the problem is that the i-phone is not downgrading to 1.0.2... :(
The iphone has to be in DFU mode in order to be restored (while downgrading), hold power plus home button for 10 seconds until Iphone restarts release the power button and leave the home button press until it shows DFU mode
i know i know... :( this is what i do... all the process goes right... at the end after verifying the firmware, iTune says : "iTunes could not sync^0 to the iPhone ~^FILENAME~ because an error occured while pushing data from the iPhone...
and when i open ibrick, the screen turns RED (good sign) and then the cell goes crazy :confused: :confused:
and when i hold the power plus home button for 10 seconds until Iphone restarts, then i release the power button and leave the home button pressed, nothing happens!!