Your phone will show a warning screen. Use to select "UNLOCK THE BOOTLOADER" and press Power to confirm.
You must manually permit the device to be modified from within the Android settings. Open > About Phone .
After reboot:
Navigate to the tab and select the Read/Format Flash sub-tab. Select your device brand as Vivo and model as Y71 .
Reinstall USB drivers or switch USB cables. unlock bootloader vivo y71 high quality
There are two primary methods to unlock the bootloader on your Vivo Y71: the Fastboot Method and the EDL Method.
This process will void any remaining manufacturer warranty. Your phone will show a warning screen
Before starting, ensure you have completed these "high quality" safety checks:
: You must enable USB Debugging and OEM Unlocking under Settings > About Phone > Software Version (tap Build Number 7 times). 3. The Unlocking Process Open > About Phone
Now bootloader accepts unsigned images.