This is the official page, where you will find the Official Vivo Stock Firmware ROM (Flash File). The Firmware comes in a zip package and contains Flash Tool, IMEI Tool, USB Driver, Flash File, How to Flash Manual.
Vivo V15 PD1831F Firmware (Stock ROM)
The Vivo Firmware helps you to downgrade or upgrade the Stock Firmware of your Vivo Smartphone, FeaturePhone and Tablets. It also allows you to fix any IMEI related issue, Software related issue, bootloop issue.
Package Name: Vivo_V15_PD1831F_MT6771_EX_A_1.10.15_04032019.zip
How to Flash: Follow Guidelines
Package Size: 5 GB
How to Flash Vivo V15 PD1831F Firmware (Stock ROM)
Step 1: Download and Extract the Vivo V15 PD1831F Firmware Package on the Computer.
Step 2: Once you have successfully extracted the firmware Package, you will be able to get the Flash File, Flash Tool, IMEI Tool, Driver and How-to Flash Manual.
Step 3: Now, Install the provided CDC or VCOM USB Driver on the Computer.
Step 4: Once you have successfully installed the USB Driver, Open SP Flash Tool on the Computer.
Step 5: Once the SP Flash Tool is Launched, Connect your Vivo Smartphone to the Computer by using the USB Cable.
Step 6: Now, Click on the Download or Upgrade Button in the SP Flash Tool to begin the Flashing process.
Step 7: Once the flashing is completed, you will see a Green Tick at the End.
Step 8: Now, Disconnect your Vivo V15 PD1831F Smartphone from the Computer and Restart it.
[*] Backup: We recommend you to take a backup of your personal data from the device, before flashing or writing the Stock Firmware or IMEI because flashing the stock firmware or IMEI may permanently delete your personal data from the device.
Caution: We do NOT recommend you to flash the preloader.bin file on the Vivo Devices powered by Mediatek Chipsets. As it may brick the device, therefore we recommend you to untick the preloader before flashing it using the SP Flash Tool.