Download Unlock Bootloader Vivo Fix Tool V20 Verified 2021 -

Reinstall Vivo USB drivers or change the USB cable/port.

Vivo generally does not allow bootloader unlocking on most of its phones (except very old models or certain Chinese versions with a now-defunct unlock application). There is no official public tool.

Launch the tool and connect your Vivo phone to your PC using a high-quality USB cable. download unlock bootloader vivo fix tool v20 verified

The tool will now begin sending commands to your phone to disable the bootloader lock. This process usually takes 1-3 minutes. Do not disconnect the phone or close the tool. Your phone might restart automatically during this process, or you might see on-screen commands in the tool window.

The keyword "Verified" usually implies that the file has been scanned for malware or tested by a community. While many forums (like XDA or GSM hosting forums) verify these tools as safe from viruses, Reinstall Vivo USB drivers or change the USB cable/port

Download the Vivo USB Drivers and MediaTek/Qualcomm USB Drivers .

Reinstall official Google Platform Tools and Vivo USB Drivers; try a USB 2.0 port. Corrupted boot or data partition during the unlock process. Launch the tool and connect your Vivo phone

fastboot oem unlock or fastboot flashing unlock to trigger the unlock.

The "V20" version is generally regarded by the flashing community as one of the more stable iterations, capable of handling modern Funtouch OS and OriginOS security checks.

So, should you ? If you are an advanced user ready to risk your warranty and potentially brick your phone, yes—the tools mentioned above are your best bet. For the average user who simply forgot a password or wants a "cleaner" phone, unlocking the bootloader is overkill.

首先尝试进入Recovery模式进行双清（清除缓存+恢复出厂设置）。若仍无法解决，可进入EDL 9008模式使用QFIL工具重新烧录官方固件。如果连9008端口都无法识别，则需要寻求专业售后维修。