shw-m250s unable to disable test mode

[gilbertz]

z3x log

Selected model: M250S
Selected port: COM5 Z3X BOX Serial Port
Selected port speed: 115200
Waiting ADB device... OK
Reading phone info...
Model: SHW-M250S
Android version: 4.0.3
Product code: Not Active
Phone version: M250S.UD18.1125.ST
PDA version: M250S.UD18.1739
CSC version: Unknown
IMEI: 3578580100xxxx
Phone S/N: Unknown
Checking Super user right... true
Reseting EFS... OK
Rebooting phone... OK
Waiting ADB device... OK
Reading phone info...
Model: SHW-M250S
Android version: 4.0.3
Product code: Unknown
Phone version: Unknown
PDA version: M250S.UD18.1739
CSC version: Unknown
IMEI: xxxx
Phone S/N: Unknown
Checking Super user right... true
Disabling Factory mode... OK
Rebooting phone... OK
Repair done
Done with Samsung Tool v.17.6

i try write efs backup i9100 not done

try write efs backup m250k not done too

try with adb command

C:\ADB>adb shell
* daemon not running. starting it now *
* daemon started successfully *
shell@android:/ $ su
su
shell@android:/ # echo -n ON >/efs/FactoryApps/factorymode
echo -n ON >/efs/FactoryApps/factorymode
sh: cannot create /efs/FactoryApps/factorymode: No such file or directory
1|shell@android:/ #

any idea...??