* To connect SGH-T999 phone you have to perform the following steps:
* Go to Menu->Settings->Developers Options * Turn on "USB Debugging" * When message is appear press "Yes". * Go to dial window. * Enter "*#7284#" Go to "Qualcomm USB Settings". * Select "DM + Modem + ADB". * Close window. * open Z3x samsung tool * select model * select comport * click unlock * wait till finish screen shot here!!!