Try to reflash the phone with "s3802ddmc3" firwmware from the Support Area, then repeat "Repair IMEI" oepration.
Try to use USB and UART cables for connection.
Note: to connect the phone via UART, You should use Samsung C3300k/C3303k micro UART cable with 525-530kOm resistor and manually select correct COM port (COM port of the box). |