Vivo Y21 Preloader File is a Bootloader (BootROM) program developed by MediaTek that allows booting the device into BROM USB mode for unlock Pattern, Password, FRP lock, upgrade, update, install firmware, and repair IMEI from Vivo Y21 MTK powered devices.
Nowadays, Every Android smartphone coming with USB protection to avoid third-party flashing and misuse of the device. You won’t be able to flash or unlock your phone without any authorized tool or permission. So, in this scenario, the Vivo Y21 EMI Preloader File can help you to bypass the auth security from your phone.
Download Vivo Y21 Preloader File (Brom Bypass)
The Preloader program is known as the Boot ROM program developed by MediaTek for Android devices. The Preloader is mainly used on MediaTek devices to initiate the boot process. Apart from that, It is also used as an interface for flashing the firmware files to the NAND (Android OS Stored) memory of the device.
Note: We tested the file on UnlockTool Software.
We can use Preloader files with these Tools
How to use Preloader File
- Download & extract Vivo Y21 Custom EMI Preloader file to your computer
- Now you have to use a third-party mtk unlock program which supported custom BROM file
- Then run the unlock tool
- Go to the Custom BROM section & select the preloader file
- Now select the option your want to use on the tool
- Now power off the Vivo Y21 device
- Connect it to the PC
- Make sure don’t forget to install MTK Preloader driver
- Now the tool will detect the phone & Bypass the BROM