VIVO Y71 factory reset successfully

[309582777]

Scanning for Qualcomm HS-USB QDLoader 9008 device...
Download Port: Qualcomm HS-USB QDLoader 9008 (COM7)
Connection status: XHCI:HUB3:USB 2.0 High-Speed
USB Driver: [Qualcomm Incorporated] qcusbser, version: 2.1.2.2, date: 3-25-2016
Initializing...

platform: msm8937, cpu abi: arm64-v8a
manufacturer: vivo
board: QC_Reference_Phone, name: msm8937_64
brand: vivo, model: vivo PD1731
build id: OPM1.171019.011, version: 8.1.0 Oreo (OPM1.171019.011 release-keys)
build description: msm8937_64-user 8.1.0 OPM1.171019.011 eng.compil.20180821.122052 release-keys

Factory reset...
Creating filesystem... Done.
Writing cache... Done.
Creating filesystem... Done.
Writing userdata... Done.