Most development for this device occurs in unofficial channels. Because it uses a MediaTek (MTK) chipset, it primarily relies on Generic System Images (GSIs) rather than device-specific custom ROMs. Official Support:
Instead of a custom ROM, many users use ADB (Android Debug Bridge) to remove "Vivo V-Appstore," "iManager," and other pre-installed bloatware to improve performance.
Since the Vivo Y1s launched with Android 10, it supports Project Treble . This means users can technically flash GSIs (Generic System Images). However, this requires a workaround to unlock the bootloader, which often involves paid authorized accounts or specific MediaTek exploit tools (like MTK Client).