1. copy the file ROOT-S5830C-i-M.zip to SDCARD.
2. Turn off the phone, press and hold VOL-UP + HOME + POWER
3. apply the update file ROOT-S5830C-i-M.zip from sdcard and reboot.
4. Download ROOT-S5830C-i-M.zip
TO UNROOT
1. copy the file UNROOT-S5830C-i-M.zip to SDCARD.
2. Turn off the phone, press and hold VOL-UP + HOME + POWER
3. apply the update file UNROOT-S5830C-i-M.zip from sdcard and reboot.
4. Download UNROOT-S5830C-i-M.zip