If your Vivo Y100 4G PD2358DF is stuck on the logo, won’t boot, or has lost its IMEI number (showing “No Service” or “Invalid IMEI”), don’t worry—these are fixable issues. This guide will walk you through how to flash the official firmware and restore your IMEI using the correct tools.
What is Stock Firmware?
Stock firmware is the official operating system provided by Vivo. It’s what your phone runs on out of the box. If your phone crashes or becomes unresponsive due to a software issue, reinstalling the stock firmware is the most reliable solution.
When You Should Flash Vivo Y100 4G
Device is stuck in bootloop
Phone won’t turn on (soft brick)
System crashes or is extremely slow
IMEI is missing or invalid
After a failed root or custom ROM installation
You want to downgrade or upgrade Android safely
Requirements Before Flashing
Make sure you prepare the following:
Correct firmware for Vivo Y100 4G PD2358DF
A Windows PC or laptop
Original USB cable
Qualcomm USB Drivers or MediaTek drivers (based on chipset)
QFIL Tool (for Qualcomm) or SP Flash Tool (for MediaTek)
Full data backup (flashing will erase everything)
Note: Vivo Y100 4G PD2358DF is usually a Qualcomm device, so QFIL is preferred. Check your device’s chipset using “AIDA64” app or your box label.
How to Flash Firmware on Vivo Y100 4G (PD2358DF)
Step 1: Download Firmware
Go to trusted sources like bdfirmware or firmware archives (e.g., firmwarefile.com, bdfirmware.com)
Ensure the firmware matches your model (PD2358DF)
Step 2: Install Drivers
Install Qualcomm USB Drivers (or MTK drivers if applicable)
Your PC should detect “Qualcomm HS-USB QDLoader 9008” in Device Manager
Step 5: Flash Using QFIL
Open QFIL.exe
Click “Flat Build” or “FireHose” depending on firmware format
Load the .mbn or .xml file from firmware folder
Click “Download” to begin flashing
Flashing usually takes 5–10 minutes. Don’t disconnect until complete.
How to Repair IMEI on Vivo Y100 4G
If your IMEI is missing or invalid (check by dialing *#06#), follow one of these safe methods.
Method 1: QCN Restore Method (For Qualcomm)
Install QPST Tool
Enable “DIAG Mode” via ADB or secret code
Backup or use correct QCN File for Vivo Y100 4G
Restore using QPST Configuration Tool → Restore Tab
Requires original IMEI number (from box or under battery)
Method 2: Using WriteDualIMEI Tool
Enable Diagnostic Mode
Use “WriteDualIMEI(QC)_MBN.exe”
Connect phone and input original IMEI
Click “Write”
Common Flashing Errors and Solutions
Problem
Solution
Phone not detected in QFIL
Install correct USB drivers or try another USB port
Flash failed at 0%
Use another version of QFIL or check firmware file
IMEI not showing
Use IMEI repair method (see above)
Stuck at logo after flash
Boot into recovery and wipe data
Safety Tips
Always use official firmware for your exact model
Never use someone else’s IMEI—illegal and dangerous
Keep a QCN/firmware backup before starting
Charge your device to at least 60%
Conclusion
Flashing your Vivo Y100 4G PD2358DF and restoring IMEI isn’t as complex as it may sound. With the right files and tools like QFIL, Qualcomm Drivers, and QCN tools, you can bring your phone back to life without visiting a service center.
Take your time, follow the steps exactly, and be patient. Once done, your phone will be back to its original performance—stable, smooth, and with full network service.
