vivo y71 FRP reset done with infreno tool
 

>>Ver:1.6.2
>>Current Task: VIVO>>Qualcomm>>Clear FRP>>AUTO
>>Operation:
1.Remove battery and insert battery back.
2.Press and hold 'VolumeUp' and 'VolumeDown' keys.
3.Please insert USB cable within 50 seconds.
Some phones need to use edl cable or special card slot.
>>Port Found[COM10].
>>Hardware Id:000560e1
>>Loading Necessary File,Please Wait...
>>Done.
>>Waiting for flash programmer to boot.
>>Loading Build Info,Please Wait...
>>Name: msm8937_64
>>Brand: vivo
>>Device: msm8937_64
>>Release Version 8.1.0
>>Project Version: OPM1.171019.011 release-keys
>>Ext Info: vivo 1724
>>Size: 16GB
>>Done.
>>Clearing FRP lock...
>>Clear FRP lock success


Thanks team