1.Download SP Flash Tool Last 2.Download MCT MTK Bypass Tool
3.Power Off Phone..
4.Open MCT MTK Bypass Tool,Click Bypass Vol+ Vol- USB
5.If Done,Open SP Flash Tool Choose Scatter File
6.Go Tool Format,Manual Format Flash
7.Find frp address,on scatter file
8.Click Start …Done…
Vivo Y20G Userlock Frp Remove File_SP Flash Tool