Rooting for android version 2.3.3/2.3.4/2.3.5/2.3.6/2.3.7 (do on your own risk)
1) Download attached file called upd_1.zip and copy it to your sdcard
2) Turn off your phone
3) Press POWER+HOME BUTTON
4) Select update from sdcard, select the file upd_1.zip
5) After the update completed - reboot
6) Now you have rooted S5830