If you run into an "Unauthorized Device" error, ensure you have installed the correctly. For those stuck on the logo, use the "Fix Boot" option within the V2.0 interface to recalibrate the partition table. Share public link
: Functions across common MediaTek (MTK) and Qualcomm Snapdragon chipsets. Download Unlock Bootloader Vivo Fix Tool V2.0
If you run into issues, please share your , your current Android/FunTouch OS version , or the exact error string shown by the tool. I can then provide targeted recovery instructions. Share public link If you run into an "Unauthorized Device" error,