Vivo typically blocks bootloader unlocking on budget models like the Y1s to maintain system security. Without an unlocked bootloader, you cannot install a custom recovery (like TWRP) or a custom ROM.
fastboot reboot fastboot fastboot flash system .img fastboot -w fastboot reboot Use code with caution. Copied to clipboard 🔍 Alternatives & Performance Fixes vivo y1s custom rom
Before flashing any ROM, you must unlock the bootloader. For the Y1S, traditional "Fastboot" commands often fail. You likely need a specialized tool like UnlockTool MTK Auth Bypass on a PC to force the unlock. Backup everything: This process erases all internal data. Enable Developer Options: Settings > About Phone Build Number Toggle OEM Unlocking: Find this in Developer Options and switch it on. Option 1: The "Looking for Recommendations" Post Best for XDA Developers or specialized Telegram groups. [Question] Best Stable Custom ROMs for Vivo Y1S (MT6765) Vivo typically blocks bootloader unlocking on budget models
The primary motivation for installing a custom ROM on a device like the Y1s is optimization Copied to clipboard 🔍 Alternatives & Performance Fixes
The Vivo Y1S was never a flagship, but Vivo’s software held it back more than the hardware did. A custom ROM like or ArrowOS removes the bloatware, stops the background app killing, and gives you a modern Android interface.