Works 100% whith root

https://hotfile.com/dl/223290844/90a1cbe/root.zip.html

Searching Samsung USB Modem... Detected (COM49)
Model: GT-S5830i
SW: BCM21553_Modem_SI1220.2_V2.4
IMEI: 352079050672490
Done with Samsung Tool ver 12.4
Phone Not Found
Done with Samsung Tool ver 12.4
Android Version: 2.3.6
Model: GT-S5839i
Product Code: Unknown
Phone Version: S5839iBULC1
PDA Version: S5839iBULC1
CSC Version: S5839iSFRLC1
IMEI: Unknown
Checking ROOT... TRUE
Reading Data From Phone... OK
Unlocking... OK
Rebooting Phone... OK
Done with Samsung Tool ver 12.4