I9100 imei repair not recognize on uart

Platform: Samsung Android
Selected port: COM11
Selected model: GT-I9100
Detected phone model: GT-I9100
Firmware compiled date: Tue Dec 3 19:57:23 KST 2013
PDA version: I9100XWMS2
CSC version: I9100MOTLS3
SW version: unknown
Android version: 4.1.2 (JZO54K)
Sales code: MOT
Country: Slovenia
HW platform: exynos4
HW Chip: unknown
HW Modem: unknown
Codename: GT-I9100
Checking Root:
Phone is Rooted.
Erasing old IMEI. It can take some time. Please wait…
Phone will restart now. Please don’t disconnect cable!
After phone being rebooted and powered on perform the following steps:
1. Disconnect USB cable.
2. Go to dial window.
3. Enter *#7284# number.
4. Set "UART" radio button to "MODEM" value.
5. Connect phone via UART cable to Box.
Connecting to phone, please wait…

Phone dont connect on uart … i have all drivers installed