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Your Vivo Y1S bootloader must be unlocked. This often requires proprietary MediaTek bypass tools, as Vivo does not officially provide unlock codes.
The Vivo Y1s is powered by the . Unlike Qualcomm devices, MediaTek chips are notoriously difficult to develop for due to closed-source drivers. However, the Y1s benefits from Project Treble support.
Is your starting to feel a bit sluggish? Are you tired of the heavy Funtouch OS interface or stuck on an older version of Android? You aren’t alone. While the vivo Y1s is a solid budget device, its software experience can leave power users wanting more.
Open a command prompt in your ADB folder on the PC and type: fastboot flash recovery twrp.img
Thanks to Google’s Project Treble, any device that launched with Android 8.0 or higher can boot a GSI. As long as your bootloader is unlocked and you use a GSI matching your system architecture (usually ARM64 for modern devices), you can run popular ROMs seamlessly. Popular GSI Options for Vivo Y1S:
The stock Android 10 environment on this phone eats a major portion of the 2GB available RAM. Switching to a lightweight custom firmware yields a responsive user experience.
