How to unlock bootloader on Vivo Y71

Vivo Y71 Bootloader unlock:

unlocking the bootloader on Vivo Y71 is not Easy but advance user Can Do it using the Below Instructions. Here we Share a Experimental Guide to unlock the bootloader on Vivo Y71.

Note:

  • it’s Risky and only for Advance user
  • Your Device Will be erased during the unlock

Steps:

  • Download & Extract the BLUnlocker_v1.zip
  • Install Qualcomm USB Driver for Qdloader 9008 mode.
  • Get your Phone, Press vol up & down buttons together & connect USB at the same time.
  • Extract your firehose file from Your Stock firmware (It’s usually named like ‘prog_emmc_firehose_****.mbn‘) & Place it in the tool Folder.
  • Check the Port number Your device is connected to in Windows Device Manager. (Looks like COM*)
  • Double Click the ‘dump_devinfo.bat’ file.
  • Enter the Port number (from step 5) & Press enter. You Will get Devinfo.img File in tool Folder
  • Edit your devinfo.img using HxD Hex Editor as shown in video or Share it Here
  • if edited, Double click ‘unlock.bat’

Note: test Point Require if the Phone does not boot to EDL mod by using the Key Combination.