Vivo X6S Firmware Flash File – Fix Wi-Fi Not Working After Flash
After flashing a custom or stock ROM on your Vivo X6S, is your Wi-Fi not turning on or showing "Saved, Not Connected"? Don't worry — this issue is common and can be resolved by correctly flashing the official firmware with the right boot and modem files.
Common Wi-Fi Problems on Vivo X6S
- Wi-Fi greyed out or disabled
- Can't connect to Wi-Fi after flash
- Saved network but no internet access
- Wi-Fi turns off automatically
Why Does Wi-Fi Stop Working After Flash?
This usually happens when the baseband/modem partition is either missing or not flashed correctly. Sometimes, using the wrong firmware build or skipping essential files like NON-HLOS.bin leads to Wi-Fi and Bluetooth issues.
Important: Always verify your firmware version and ensure it matches the phone's exact build to prevent communication hardware issues.
Required Files & Tools for Fixing Wi-Fi Issue
| Vivo X6S QFIL Stock ROM (PD1415BA) |
| QPST/QFIL Tool for Vivo X6S |
| Qualcomm USB Drivers |
Precautions Before Flashing
- Battery level should be above 50%
- Use official Qualcomm USB Drivers
- Extract firmware using WinRAR or 7zip
- Backup all important data – this process will erase your phone
How to Flash Vivo X6S and Fix Wi-Fi Problem
- Install QFIL and USB drivers on your computer
- Launch QFIL tool and choose "Flat Build"
- Click on "Browse" and load the
prog_emmc_firehose_*.mbnfile - Click “Load XML” and select both
rawprogram.xmlandpatch.xml - Power off your Vivo X6S and enter EDL mode (use test point if needed)
- Connect the phone to PC; QFIL should detect the Qualcomm port
- Click on “Download” to begin flashing
Reminder: Always use complete firmware with modem/baseband files. Partial firmware may result in Wi-Fi, Bluetooth, or signal loss.
- Try a factory reset from recovery mode
- Ensure the modem image flashed successfully
- If issue persists, consider re-flashing with a newer build
If you need help, feel free to ask in the comment section below. We will assist you with step-by-step guidance.
Tags: Vivo X6S Wi-Fi Problem, Vivo X6S Flash File, Fix Vivo X6S WiFi Not Turning On, Qualcomm QFIL Flash, Vivo X6S Stock ROM