Vivo iQOO 3 | Fix Secure Boot & Restore Official ROM
If your Vivo iQOO 3 (Model PD1955F) is stuck on Fastboot Mode after flashing or failed OTA update, this guide provides the official firmware to recover your phone. The Vivo iQOO 3 stock ROM includes rawprogram.xml, patch.xml, firehose.mbn, and supports flashing via Qualcomm QFIL tool.
⚠️ Issue Resolved by This Firmware
- Stuck on Fastboot Mode or EDL Mode
- Qualcomm Crashdump Mode after incorrect root or flash
- Vivo iQOO 3 stuck on logo or recovery loop
- Boot.img or vbmeta.img error after unlocking bootloader
📂 Need Firmware & Tool
- Firmware (PD1955F_EX_A_6.70.35)
- QPST/QFIL Flash Tool for Vivo iQOO 3
- Qualcomm USB Drivers
🔧 Flashing Preparation
Important: Ensure you use firmware that matches your exact model (PD1955F) and software region. Backup your data and charge the phone to at least 60%.
📘 How to Flash Vivo iQOO 3 Using QFIL
- Install Qualcomm USB Drivers on your PC.
- Extract the firmware .rar file using 7-Zip or WinRAR.
- Launch QFIL Tool from the QPST package.
- Select Flat Build.
- Click Browse and load
prog_emmc_firehose_*.mbnfrom the firmware folder. - Click Load XML and select:
rawprogram.xmlpatch.xml
- Boot the Vivo iQOO 3 into EDL Mode (use test point method if needed).
- Connect the phone to your PC. It should show
Qualcomm HS-USB QDLoader 9008in Device Manager. - Click Download to start flashing.
🧠 What to Do If Vivo iQOO 3 Stays in Fastboot Mode?
If the flashing completes but the phone is still stuck in fastboot:
- Try flashing again using full firmware (including boot, vbmeta, system, userdata).
- Use fastboot erase userdata command to reset user data if ADB access is enabled.
- Make sure vbmeta.img is not modified or disabled.
📝 Firmware Details
| Component | Description |
|---|---|
| PD1955F_EX_A_6.70.35 | Official iQOO 3 ROM with QFIL support |
| QPST Flash Tool | Required for Qualcomm devices |
| Qualcomm USB Drivers | To detect device in EDL mode |