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Can I downgrade my phone to the lower Android version?

How to flash the firmware?

How to unlock Bootloader(BL)?

Can I install the firmware of other phones in my vivo phone?

Where can I download ROM or firmware for my phone?

How to exit the Fastboot mode?

Is there an international firmware for the phones such as X21 sold in Chinese Mainland?

How to downgrade my phone?

How to access Recovery mode?

It prompts "Decryption unsuccessful" while installing the firmware. What should I do?

Find my phone
Lag & Stuck
Backup & vivoCloud
Products
Music & Video
Storage & File Manager
Personal Hotspot & Wi-Fi
vivo & Google account
Purchase consulting