s5830i unlock done with sgtool
3:37:45 PM - Starting ADB Server
3:37:50 PM - ADB Device: GT-S5830i
3:37:50 PM - SW Version: S5830iXXLD2 (Android: 2.3.6)
3:37:50 PM - Phone Imei: RF1CB7WJMJY
3:37:50 PM - Checking SU Root Access..
3:37:51 PM - Auto-Root in progress, Loading data to SD-Card
3:37:52 PM - Restarting Phone in Recovery mode.
3:39:12 PM - ROOT Access: True (SuperUser)
3:39:24 PM - FS Read OK, Clearing Simlocks..

3:39:29 PM - Unlock Done..

-- Operation done in 113 seconds --
Root делается, попробуйте установить sd card


Какая версия android ?