1. First enter vivo official website to download the firmware package:
/Services/All
Select the corresponding model, and then click "Resource Download" to download the corresponding firmware upgrade package (complete package) under firmware upgrade:
After downloading, put the upgrade package in the root directory of the mobile phone U disk or SD card (meaning don't put it in any folder).
Note: The screen can't be operated in recovery mode, the volume up and down keys can move the cursor, and the power key can determine the options.
2. When the phone is turned off, press and hold the power button and the volume up button at the same time, and then release until the word vivo appears, and the phone will automatically enter the recovery mode.
3. Select "Install Upgrade Software" and the interface will jump. You can choose whether to upgrade from internal memory or external SD card. For example, put the downloaded installation package in the root directory of mobile phone USB flash drive, and select mobile phone storage.
4. Then you will jump to the interface of selecting the upgrade package and select the pre-downloaded upgrade package.
5. The upgrade interface has a progress bar, and the upgrade is completed after reading the progress bar.
As shown in the figure, after reading the progress bar, you will be prompted that the installation is successful. Click OK to jump to the recovery interface, and finally restart the phone.