Vivo Y71 (1724) FRP and safe format EMMC method successfully done by Hydra Tool
Screen Short:
1. Run Qualcomm Tool and choose "Sosc"
2. Choose Brand and Module.
3. Go to "Service"--> "Vivo"
4. Choose "Factory Reset" from drop down menu
5. Choose "Safe Format EMMC" from Flash Mode
6. Tick "Include FRP"
7. Click on "Execute"
8. Connect device to computer using USB Data Cable.
9. Wait until the operation is completed.
2. Choose Brand and Module.
3. Go to "Service"--> "Vivo"
4. Choose "Factory Reset" from drop down menu
5. Choose "Safe Format EMMC" from Flash Mode
6. Tick "Include FRP"
7. Click on "Execute"
8. Connect device to computer using USB Data Cable.
9. Wait until the operation is completed.
Screen Short:

BR
Mount Everest
Mount Everest