To flash a ROM, you typically need a custom recovery like TWRP . Without an unlocked bootloader, you cannot install TWRP. Comparison of Models vivo Y51 (2015) vivo Y51 (2020) Snapdragon 410 Snapdragon 665 2GB / 16GB 8GB / 128GB Max Android Android 5.0 (official) Max Android Android 11 (official) Custom ROMs Limited (LineageOS 16) Custom ROMs Virtually none

The (typically the 2020 model, with Snapdragon 665) is a solid budget smartphone. However, like many Vivo devices, it comes with Funtouch OS —a heavily skinned Android layer that many users find bloated, slow to update, or intrusive with ads and notifications.

: You must boot into TWRP to "Wipe" your device (excluding internal storage) before "Installing" the ROM zip file. Flash GApps

Upgrading your with a custom ROM is a popular way to bypass the limitations of Funtouch OS and experience newer Android versions . While the official update support for the Vivo Y51 has largely concluded with older builds, the custom ROM community continues to offer options for performance and customization. 1. Popular Custom ROM Options for Vivo Y51

Stock Funtouch OS 11 (based on Android 11) is the last official update for most Vivo Y51 variants. Custom ROMs breathe new life into the device: