Disclaimer: The following steps are for educational purposes. Modify your device at your own risk. TechSphinx is not responsible for bricked devices.
| Feature | Stock Funtouch OS | Custom ROM (Lineage/Pixel) | | :--- | :--- | :--- | | Interface | Heavy, iOS-like, Bloatware | Clean, Stock Android, Lightweight | | Speed | Laggy, stutters on
Unlocking and flashing a custom ROM on the Vivo Y1s (MT6765 Helio P35)
is possible, though it requires specific third-party tools since Vivo does not officially support bootloader unlocking. ⚠️ Essential Warning Flashing a custom ROM voids your warranty
, and carries a risk of "bricking" (making the phone unusable). Always back up your data before proceeding. Step 1: Unlock the Bootloader
Standard Fastboot commands often fail on Vivo devices. Most users rely on the UnlockTool on a PC for the MTK chipset. Enable Developer Options Settings > About Phone Software Version seven times. Toggle Settings Settings > System > Developer Options OEM Unlocking USB Debugging Use UnlockTool : Connect your phone to a PC with MTK USB Drivers vivo y1s custom rom
installed. Use the tool to perform a "Bootloader Unlock" specifically for the Vivo Y1s model. Step 2: Install Custom Recovery (TWRP)
A custom recovery is needed to flash ROM files. You can find unofficial builds of TWRP for Vivo Connect your phone in Fastboot Mode (Power + Volume Up). On your PC, open a command prompt and type: fastboot flash recovery twrp_filename.img Reboot into recovery immediately to verify installation. Step 3: Choose and Flash Your ROM LineageOS Downloads
All devices. Devices Changes OTA Verifier Flash Tools. Motorola. 6.1 PlusDRG. GT Neo6bale. Xperia 1 VIpdx245. Xperia 10 VIIpdx257. LineageOS Downloads
is a budget-oriented smartphone powered by the MediaTek Helio P35 (MT6765) chipset. While it runs on Vivo's proprietary Funtouch OS
based on Android 10, the "custom ROM" landscape for this specific model is restricted by hardware limitations and manufacturer software policies. The Custom ROM Landscape for Vivo Y1s Disclaimer: The following steps are for educational purposes
For many users, custom ROMs represent a way to escape heavy skins like Funtouch OS or to extend the life of a device. However, the Vivo Y1s faces several hurdles: Chipset Barriers:
The MediaTek MT6765 chipset is notoriously difficult for custom development because MediaTek rarely releases complete kernel source code. This makes creating stable, hardware-optimized ROMs like Pixel Experience a significant challenge. Locked Ecosystem:
Vivo traditionally maintains a strict policy against official bootloader unlocking, which is the first mandatory step for any custom ROM installation. Project Treble Potential: The Vivo Y1s supports Project Treble , meaning it can technically run Generic System Images (GSIs)
. GSIs are universal versions of Android (like AOSP or LineageOS) designed to work across various hardware, though they often suffer from bugs in features like the camera or Bluetooth. Essential Steps for Modification
If you are determined to modify your Vivo Y1s, the process generally follows these stages: | Feature | Stock Funtouch OS | Custom
After booting into your new custom ROM, you might encounter issues:
In the world of Android modding, some phones are legends—think of the OnePlus One or the Xiaomi Mi 3. Others are cautionary tales. The Vivo Y1S (2019) falls squarely into the latter category. Ask any XDA forum lurker about putting a custom ROM on this device, and you’ll likely get a laugh, then a sigh.
Custom ROM for Vivo Y1s — Guide, Recommended ROMs, and Installation Steps
If you want a "stock Android" experience that is stable and reliable, LineageOS is the go-to choice.