✅ Flash File Firmware Vivo PD1421F | Dead Boot Fix, QFIL Tool, EDL Mode Repair
Download the official Vivo PD1421F Firmware Flash File tested for Qualcomm-based devices. This stock ROM is specifically designed to repair Vivo PD1421F software errors such as hang on logo, black screen after flashing, touch not working, or dm verity verification failed. The firmware is used with the trusted QFIL Tool and can recover even hard-bricked or dead boot phones.
📱 Common Issues Fixed with PD1421F Firmware
- Vivo PD1421F stuck in Fastboot Mode
- Touchscreen not responding after flash
- Bootloop / Restart on logo
- Vivo PD1421F QFIL error fix
- dm-verity corruption / system verification failed
- Dead after flash or invalid partition mapping
- Vivo PD1421F QCN/EFS restore problem
⚙️ Firmware + Flash Tools Download
| File Name | Download Link |
|---|---|
| 📦 Vivo PD1421F Flash File (EX_B_3.8.26) | Download Firmware |
| 🛠 QFIL Flash Tool (QPST v2.7) | Download QFIL Tool |
| 🔌 Qualcomm USB Drivers (Latest) | Download USB Drivers |
🔐 Flashing Instructions (Vivo PD1421F with QFIL Tool)
⚠️ Important: Only use firmware matching your device’s build version (PD1421F_EX_B_3.8.26). Make sure your battery is charged to at least 60%. Data will be erased during the flash process.
- Install Qualcomm USB drivers on your PC.
- Extract both QFIL Tool and PD1421F Firmware using WinRAR or 7-Zip.
- Open QFIL Tool and select Flat Build mode.
- Click "Browse" and select the
prog_emmc_firehose_8xxx.mbnfile from firmware folder. - Click "Load XML", select
rawprogram.xmland thenpatch.xml. - Power off your Vivo PD1421F and put it into EDL Mode using the Test Point method.
- Connect phone to PC via USB cable. A new Qualcomm HS-USB QDLoader 9008 port will appear.
- Click "Download" to begin flashing.
- Wait until "Download Succeed" message appears. Then disconnect and power on the phone.
📝 Firmware Information
- Model: Vivo PD1421F
- CPU: Qualcomm Snapdragon (MSM8916)
- Android Version: 5.0.2 Lollipop
- Build Number: EX_B_3.8.26
- Format: MBN + XML + Firehose
- Tool Used: QFIL (QPST)
Note: Flashing will wipe all data including apps, contacts, photos, and internal storage. Create a full backup before starting.