So, After a bit of research, heres what I got:- Vivo developers modified there bootloader to used a different command for bootloader unlockrelock than the the stock android commands.The XDA App is the fastest way to access the forums on mobile.
Labs is an independent app store that gives developers full control over their work. Hi Ive seen a lot of users struggling around the internet to find out the way to root vivo phones. And, Yeah, There are a lot of tutorials available explaining how to unlock bootloader and root vivo phones, but, nearly all of them do not work. Vivo Y53 Bootloop Upgrade To TheAlso, On some phones like vivo y51l (Upgrade to PDF15102.6.7), youll need to upgrade to the latest version available. And Thats Why we need a modified fastboot binary to unlock bootloader of vivo. Follow the below steps to unlock bootloader of vivo phones:- Ive compiled fastboot binary with necessary modifications which you can download from below Download vivofastboot For Windows Download vivofastboot For Linux Download: Vivofastbootv2:- Linux Windows Extract the downloaded files on your Computer and open TerminalCommand Prompt in the extracted directory Now power off your vivo phone and enter fastboot mode by pressing power vol buttons simultaneously. If you are using linux then type sudo.fastboot bbk unlockvivo If you are using Windows then type fastboot bbk unlockvivo Voila Your Vivo Phone is now Unlocked. If You Want to lock it again then just type fastboot bbk lockvivo In case Of linux type sudo.fastboot bbk lockvivo UPDATE:- I discovered a new command for some Vivo phones, it isnt working for me but many user asked to make a fastboot binary with that command. The new command is fastboot vivobsp unlockvivo (Type fastboot help to get list of supported commands.) If this method isnt working for you, dont worry, I have another working method ( posting soon.) Now you can port and flash twrp recovery and Custom Roms on your vivo devices. UNOFFICIAL CM 12.1 for Vivo y51l is out, Have a look: Original Thread Here UPDATE:- I discovered a new method few months ago, it works well on new vivo devices:- This method is unofficial may brick your device (in 1 cases) Im not responsible for any loss or harm done to your device, sdcard, PC, home, ferrari etc. If You are using this method to unlock bootloader, use at your own risk Downloads:- BLUnlockerv1.zip QDLoaderHSUSBDriver.7z Steps to unlock bootloader:- 1. Extract the BLUnlockerv1.zip (You have done this already, trust me, i know you did it 2. Install Qualcomm USB Driver for Qdloader 9008 mode. ![]() Extract your firehose file from your stock firmware (Its usually named like progemmcfirehose.mbn) place it in the current directory. Check the port number your device is connected to in WIndows Device Manager. Looks like COM) 6. Double Click the dumpdevinfo.bat file. Enter the port number (from step 5) press enter 8. ![]() Double click unlock.bat -:Video:- If all went good, your bootloader is unlocked now Thanks me later, go break some eggs Peace vivo fastboot binary sources ( My GitHub ):- GIVE CREDITS IF YOU ARE USING MY WORK. The Following 13 Users Say Thank You to Naveen Singh For This Useful Post: View. Follow the below steps to unlock bootloader of vivo phones:- Ive compiled fastboot binary with necessary modifications which you can download from below Download vivofastboot For Windows Download vivofastboot For Linux (Im a new member so i can not post links ) Extract the downloaded files on your Computer and open TerminalCommand Prompt in the extracted directory Now power off your vivo phone and enter fastboot mode by pressing power vol buttons simultaneously. First You have to enable oem unlock from developer options Then download the vivo fastboot from the link above And follow the steps above. The Following User Says Thank You to Naveen Singh For This Useful Post: View.
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