The Vivo Y1s was released in late 2020 and is powered by the chipset. Repairing these devices requires specific "tested" flash files and tools like the SP Flash Tool or specialized software like UnlockTool or Z3X Easy JTAG. Common Issues Solved by Flashing vivo Y1s - Full phone specifications - GSMArena.com
Vivo Y1s (V2015) Flash File: 100% Tested Solution for Dead Boot and Hang on Logo
If your is stuck on the Vivo logo, experiencing a "Red State" error, or has completely lost power (dead boot) after a failed update or reset, flashing the official firmware is often the only way to revive it.