Use the original or a high-quality data cable to prevent connection drops. How to Install (Flash) the Firmware
: Bypassing forgotten patterns, PINs, or fingerprints when standard resets fail. Pd1731-a-1.8.7 Flash File
Download the Pd1731-a-1.8.7 Flash File (ensure it is the ".zip" for recovery flash or ".pac" for QPST flash). Use the original or a high-quality data cable
Flashing this file generally requires a computer and specialized tools due to the device's Qualcomm architecture. According to the Vivo Support Center , official updates can be done via the phone's "System Upgrade" menu. However, for manual flashing of the stock ROM, tools like or AFH (Android Fastboot Reset Tool) are frequently used to communicate with the device in Fastboot or EDL (Emergency Download) mode. Critical Warnings Flashing this file generally requires a computer and
Your device gets stuck on the logo screen, continually restarts, or fails to boot into the OS. Flashing the stock firmware is often the only fix.
The tool should detect the device, and a progress bar (typically turning red, yellow, or yellow-green) will appear. Step 6: Finalize Installation