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.
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_Y31_PD1505W_MT6580_EX_A_1.11.10_03152016.zip
Package Size: 1 GB
How to Flash Vivo Y31 PD1505W Firmware (Stock ROM)
Step 1: Download and Extract the Vivo Y31 PD1505W 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 Y31 PD1505W Smartphone from the Computer and Restart it.