Downgrade Vivo 1917 Android 11_to_10

Downgrading Vivo 1917 Android 11_to_10:

1. Ensure your device bootloader is unlocked.
2. Download the factory image for the target Android version.
3. Install ADB and Fastboot on your computer.
4. Boot your Vivo 1917 from 11_to_10 into Fastboot mode.
5. Run the following commands:
– fastboot flash bootloader bootloader.img
– fastboot reboot-bootloader
– fastboot flash radio radio.img
– fastboot reboot-bootloader
– fastboot -w update image.zip
6. Reboot your device and complete the setup.

Important: Downgrading will erase all data on your device. Make sure to back up your data before proceeding.