Vivo Y51 Firmware Series

Vivo Y51 only
Firmware Code : Y51 Upgrade Package PD1510F_EX_A_1.17.23 (5.0 Version) ONLY FOR Thailand, Malaysia, Myanmar, Philippines, Vietnam

DOWNLOAD : PD1510F_EX_A_1.17.23 2017-05-11

Vivo Y51L
Firmware Code : Y51L Upgrade Package PD1510F_EX_A_1.17.23 (5.0 Version) ONLY FOR India, Indonesia

DOWNLOAD : Y51L Upgrade Package PD1510F_EX_A_1.17.23

Firmware update is credit to http://www.vivo.com.

How to Install update via recovery:
In shutdown device, press hold power and volume up button simultaneously until VIVO log recovery appears. After you enter the Recovery mode, select "Install update" by pressing Volume down button or touching it directly;then choose the Vivo ZIP update you downloaded, wait until finish and reboot system.

Note! Do it at your own risk, After flashing update ! the device is set automatic in reset condition, All user data is lost. Make sure back-up first before to proceed update your phone.