elected model: I9100
Selected port: COM26 Z3X BOX Serial Port
Selected port speed: 115200
File analysis... OK
Total file size: 0x36AC5D80
Searching USB Flash Interface... detected COM63
Setup connection... OK
Reading PIT from phone... OK
Saved to C:\Program Files\Z3X\Samsung\SamsungTool\Pit\I9100_31-12-2013_12-40-27.pit
Sending boot.bin... OK
Sending cache.img... OK
Sending factoryfs.img... OK
Sending hidden.img... OK
Sending modem.bin... OK
Sending param.lfs... OK
Sending Sbl.bin... OK
Sending zImage... OK
Flashing done (time - 00:03:12)
Done with Samsung Tool v.16.7
Selected model: I9100
Selected port: COM26 Z3X BOX Serial Port
Selected port speed: 115200
Searching ADB device... OK
Reading phone info...
Model: GT-I9100
Android version: 4.1.2
Product code: Unknown
Phone version: Unknown
PDA version: I9100XWLS8
CSC version: I9100FOPLS3
IMEI: null
Phone S/N: Unknown
Checking Super user right... false
Rooting phone, please wait... OK
Checking Super user right... true
Reading nv data... OK
Checking magic... OK
Running zTool, please wait... OK
Writing data to phone... OK
Rebooting phone... OK
Repair done
Done with Samsung Tool v 16.7
сделал вроде как вы сказали . набрав *#7284# выбрал PDA сверху в место modem. не помогло imei null остался