Can not connect phone

hello

i am new user with usb gcpro dongle. trying to imei repair s3 i747 with usb. Device already in DM+Modem+ADB mode

When I connect dongle and connect phone to computer, i am not seeing the software connect to phone.

can you please help ?

Code:

Using Version...1.0.0.0024
Selected Port ssudserd0000 = COM4
Selected Model SGH-I747M
Selected Task SAM IMEI REPAIR

ALL SAMSUNG IMEI STARTED..

Searching Phone Please wait...

No reply on samsung mode..
Enter *#7284# select UART > PDA
Enter *#0808# select AP > MTP+ADB
MUST USE UART C3303K !!!RJ45 CABLE!!! ON ALL NEW SAMSUNG DEVICES.
DIAL *#0*# AND TRY AGAIN...
Total Time Take...00:00:06