Download the official Vivo Y33s stock firmware firmware that precisely matches your model variant (e.g., V2109). Extract the zip folder to your desktop. Inside the firmware folder, locate the MT6768_Android_scatter.txt file and the preloader_v2147.bin file. Step 2: Open Your Flashing Tool
Click on the button and select the MT6769_Android_scatter.txt file from your extracted firmware folder.
Ensure the location path points accurately to your standalone Y33s preloader file. Step 4: Execute the MTK Auth Bypass y33s preloader file
If your phone is stuck on a boot loop or shows a black screen and won't turn on.
You need the full stock ROM/firmware for the Vivo Y33s to obtain the correct scatter.txt file and the preloader.bin. Download the official Vivo Y33s stock firmware firmware
The Preloader is the very first piece of code that runs when the phone powers on. It acts as the gatekeeper between the hardware and the operating system. It is responsible for initializing the hardware (like the CPU and RAM) and loading the main Linux kernel.
Flashing an incorrect preloader file is the most severe mistake a technician can make. If the wrong preloader is written to the device, the phone will not boot at all—not even to a black screen. Recovery becomes possible only through ISP mode, which requires disassembling the phone, locating test points on the motherboard, and using specialized hardware to force the device into emergency download mode. Many users have reported that once BROM is disabled and an incompatible preloader is written, recovery is impossible without professional ISP equipment. Step 2: Open Your Flashing Tool Click on
The tool will detect the device and output a success message: SLA/DAA Auth Bypassed . Keep the device connected and do not touch the buttons. Step 4: Configure SP Flash Tool Launch as an administrator.
Flashing at this level carries risks. Ensure you have gathered the following essentials before attempting to use a preloader file on your Vivo Y33s: 1. The Right Files