• admin
• July 19, 2025
• 0 Comments

If you’re facing problems like bootloop, “No Service,” invalid IMEI, lag, or a completely dead Vivo V50, don’t worry. With the right tools and method, you can flash the stock firmware, restore the IMEI, and bring your device back to life—all by yourself.

What is Stock Firmware?

Stock firmware (also called a stock ROM) is the official operating system software that comes pre-installed on your Vivo device. It includes:

• The Android OS and system UI
• Baseband (modem) for network functions
• Preloaded drivers and security patches

Installing stock firmware helps:

• Fix bootloops or stuck-on-logo issues
• Remove lag, viruses, or bugs
• Restore the original software (especially after rooting or custom ROMs)
• Repair network or IMEI issues

When Should You Flash the Vivo V50 Firmware?

Flash stock firmware if:

• The device is stuck at Vivo logo or bootlooping
• You installed a wrong or buggy update
• The phone is dead due to software corruption
• You’re unable to detect SIM or facing invalid IMEI
• You’re downgrading or upgrading Android
• You rooted the phone and want to revert to original software

What You’ll Need Before Flashing

Make sure you prepare the following:

Item	Description
Vivo V50 Stock Firmware	Correct PD2437F firmware (download from Vivo’s support or trusted sites like firmwarefile.com, needrom, or halabtech)
USB Drivers	Vivo USB Driver + MTK/SPD/QC driver depending on chipset
Flash Tool	QFIL (Qualcomm) or SP Flash Tool (MediaTek)
USB Cable	Good quality cable (prefer original)
PC or Laptop	Windows 7/8/10/11 preferred
IMEI Backup	If possible, backup current IMEI using tools like QCN Backup or SN Writer

How to Flash Firmware on Vivo V50 PD2437F

Step 1: Identify Chipset (Important!)

The Vivo V50 PD2437F is powered by a Qualcomm Snapdragon chipset, so QFIL (Qualcomm Flash Image Loader) will be used.

Step 2: Download Required Files

1. Vivo V50 Firmware: Search for Vivo V50 PD2437F firmware (make sure it includes rawprogram0.xml and patch0.xml)
2. Qualcomm USB Driver: Install Qualcomm QDLoader HS-USB Driver
3. QFIL Flash Tool: Download latest QFIL from the QPST tool package

Step 3: Install Drivers

• Install Qualcomm USB Drivers
• Restart your PC after installation
• Connect your phone in EDL mode (Qualcomm Emergency Download mode)

Step 4: Boot into EDL Mode

Method 1 (Test Point):

• Open back cover carefully (if device is not recognized)
• Locate test point pins on motherboard
• Short them using tweezers and connect USB cable

Method 2 (ADB):
If device is bootable:

bashCopyEditadb devices
adb reboot edl

Step 5: Load Firmware into QFIL

1. Open QFIL
2. Choose Flat Build
3. Browse and select:
   • rawprogram0.xml under “Program Path”
   • patch0.xml under “Patch Path”
4. Set port: Select Qualcomm HS-USB QDLoader 9008
5. Click Download to start flashing

Wait 5–10 minutes. After flashing, the device will reboot automatically.

How to Repair IMEI on Vivo V50 PD2437F

If your device shows:

• “Invalid IMEI”
• “No Service”
• SIM not detected

It’s likely the IMEI partition was wiped or corrupted. Follow these steps to safely restore it.

Legal Note:

IMEI repair should only be done to restore your original IMEI number (found on box or under battery). Illegal cloning is a criminal offense.

Method 1: QCN Restore via QPST/QFIL

1. Connect your phone in diagnostic mode:

bashCopyEditadb shell
su
setprop sys.usb.config diag,adb

2. Open QPST Configuration
3. Add port showing your Qualcomm device
4. Open Software Download → QCN Backup/Restore
5. Load your backed-up .qcn file
6. Click Restore

Method 2: Write IMEI with WriteDualIMEI Tool

For devices with 2 SIM slots:

1. Open WriteDualIMEI Tool
2. Input both IMEI numbers
3. Connect phone in EDL or DIAG mode
4. Click Start to write IMEI

Method 3: Using Qualcomm NV Tools (Advanced)

1. Use QPST to open NV Browser
2. Search for 550 field (IMEI)
3. Manually input original IMEI as per format
4. Click “Write NV”

Common Flashing & IMEI Repair Errors

Error	Solution
Device not detected	Install Qualcomm driver / use EDL mode
Sahara Fail / Firehose Fail	Use different firmware / loader file
QFIL stuck at 0%	Try changing USB cable or port
Invalid IMEI even after flash	Use QCN restore or IMEI tools
Phone bootloop after flash	Wipe from recovery or re-flash

Tips for Safe Flashing

• Always verify the model number (PD2437F)
• Only use official firmware or trusted sources
• Don’t disconnect USB during flashing
• Use a fully charged phone (or keep it powered via EDL)
• If flashing fails, don’t panic — retry with different USB port or firmware version

Post-Flashing Setup

After flashing is complete:

• Do a factory reset via recovery if phone bootloops
• Check IMEI via *#06#
• Set up Google account and test connectivity
• Update system via OTA (if needed)

Download Links (Examples)

These are sample trusted sources. Search or request updated versions if links change.

• Firmware: https://bdfirmware.com/
• QFIL Tool: https://androidfilehost.com/?fid=1395089523397891380
• QPST Tool: https://qualcomm-flash-tool.com

Final Words

Flashing the Vivo V50 PD2437F can solve nearly all major software issues—bootloop, dead phone, update failure, and corrupted IMEI. It’s a powerful process, but only when done right.

Just remember:

• Backup before flashing
• Use correct firmware for the PD2437F model
• Never use random IMEI numbers

With care and the right files, your Vivo V50 will be back in action—faster, cleaner, and error-free.