hi
try to unlock samsung j400 (movistar) ,unlock ok but still asking code
Selected model: J400
Selected com port: COM4
Selected speed port: 921600
Please, connect phone and press shortly power button
Phone Detected
Sending NAND pre loader... OK
Sending NAND loader... OK
Unlock - ok
Elapsed time: 131 second, sw ver: 3.5.0040