Baklasin ang phone para sa test point
Open Hydra MTK Module
Brand : Vivo
Model : Y15s (PD1901F)
Click BOOT / INFO
Sa phone dapat tanggal battery
Gawin ang Test Point at connect USB
Wait lang muna matapos
Next Service Tab --- Tool --- Factory Reset Protection
Flash Mode --- Auto or Zero Wipe
Execute
Wait lang matapos at Done na
Balik Battery --- Turn On --- Set Up