Limited by Android 8 and higher version, the phones with Android 8 and higher version cannot flash the lower version(You can check the current version of your phone in Settings>System update).
#VIVO Y21L FLASH FILE HOW TO#
How to Flash Vivo Y21L Stock Rom Firmware Flash File
Download: Download the above-required files on your PC.
Take Device Backup: The very first thing you need to do is make a backup.
PC or Laptop: To carry out this Stock Rom Firmware installation, you need a PC or Laptop.
Charge your device: Before you proceed with the below information, you are recommended to ensure that your Vivo Y21L is at least 50% charged.
Fix Issues: Your device might develop issues that might be software related you can fix that by flashing the Vivo Y21L Flash File.
After flashing the official stock firmware, you will gain your warranty back.
Unroot: You can also use the Vivo Y21L stock Rom firmware to unroot your device completely.
Smartphone’s can be bricked while trying to root it or flashing a custom rom or recovery.
Unbrick: The Vivo Y21L Stock Rom Firmware can also be used to unbrick any device.
Downgrade or Upgrade your device: You can use the VIVO Y21L Stock Rom Firmware to downgrade or upgrade your device to a new version. It depends on the release of the Stock firmware or your choice if the option is available.
You are going to need your device stock Rom for these following reasons someday. It’s always advisable that you backup your device Firmware after purchasing it.
You can solve software errors by flashing Stock ROM.
Operating System – Android 5.1 Lollipop (Funtouch OS 2.5).