The easier way to Flash, Upgrade to voLTE, Downgrade Vivo Y51/Y51L & Y21L (No Bootloops)

Hey guys, what's going on
Have you ever tried to upgrade Vivo Y51L to get volte feature & got bootloop 🙄 instead, then this video is for you..😃

On our old firmware, the bootloader is unlockable, but with a different command, it's fastboot vivo_bsp unlock_vivo
So, you can upgrade your Vivo Y51L without having to worry about QDloader drivers & QPST.
Just install adb driver & download vivo fastboot v2 from below :-)

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Downloads :

Vivo fastboot v2 for firmware flash : https://drive.google.com/file/d/1T-Xm...

PD1510F_EX_C_2.6.13 firmware : https://drive.google.com/open?id=1o7u...

PD1510F_EX_2.7.1 recovery flashable : http://asia-sysupwsdl.vivoglobal.com/...
(Requires updated stock vivo recovery)

To go back to non-volte version (1.16.2), flash this firmware: https://drive.google.com/open?id=1wtz...

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Few other videos you might be interested in :

MiUi 9 for Vivo Y51L :    • MiUi 9 for Vivo Y51L/Y21L  
Cyanogen Mod for Vivo Y51L :    • CM 12.1 ROM For Vivo Y51L  
Fix Invalid IMEI/MEID in Vivo Y51L :    • How to fix Invalid IMEI MEID/Change I...  
TWRP for Vivo Y51L :    • How To Unlock Vivo Y51L/Y21L's bootlo...  
Unlock bootloader of any vivo phone :    • How to unlock bootloader of any vivo ...  
Pixel 2 Android Emulator in PC 👌 :    • Installing Android Emulator in Androi...  

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