Samsung Glaxy Ace GT-S5830i V2.3.6 root

Download update zip - http://d-h.st/8kM 

                            To unroot update zip -http://dc657.4shared.com/download/1F8vbB28/UnrootS5830i.zip?tsid=20130422-041038-9c136a49

 Choose update zip from SD, to root or unroot at CWM. That's all.