The LYF Wind 4S (model LS-5018) was a mid-range 4G smartphone from 2016, notable for its exceptionally large 4000mAh battery. It featured a 5.0-inch HD display, a Qualcomm Snapdragon 210 processor, and a solid 2GB of RAM, all running on Android 5.1 Lollipop. Over time, devices running this older OS are prone to software degradation, leading to issues like severe performance lag, abnormal battery drain, and getting stuck on the LYF logo (bootloop). For owners facing these problems, a clean installation of the official stock firmware is the best way to restore the device’s stability and performance.
Crucial Safety Warning: This is a Qualcomm-powered device. The firmware must be flashed using the QPST Flash Tool (QFIL). Do NOT attempt to use SP Flash Tool or any other software, as it is incompatible and will not work.
LYF Wind 4S (LS-5018) Firmware Details
Below are the key specifications for the LYF Wind 4S. Note the Qualcomm chipset, which requires the specific QFIL flashing procedure.
| Attribute | Details |
|---|---|
| 📱 Device | LYF Wind 4S (LS-5018) |
| 🆔 Chipset | Qualcomm Snapdragon 210 (MSM8909) |
| 🤖 Android OS | 5.1 Lollipop |
| 📂 File Type | Qualcomm Firmware (QFIL) |
| 💻 Flashing Tool | QPST Flash Tool (QFIL) |
Download Official Firmware for LYF Wind 4S (LS-5018)
-
- Software Version: 00_01_09
- File Name: WIND-4s LS-5018 PC SW VER_00_01_09.rar
- Size: 1.15 GB
- 🔗 Download Link: Download (MediaFire)
- Software Version: 00_01_09
- Software Version: Stock 5.1.1
- File Name: Lyf_LS5018_MSM8909_5.1.1.rar
- Size: 897 MB
- 🔗 Download Link: Download (Google Drive)
Why Flash the Stock Firmware on Your LYF Wind 4S?
Flashing this official stock ROM is the best way to address the specific, widely-reported issues with this model:
- Fix Bootloop (Stuck on Logo): A clean installation of this Android 5.1 firmware is the definitive fix for a phone that powers on but never moves past the Lyf startup logo.
- Resolve Abnormal Battery Drain: This firmware can fix software bugs that cause the massive 4000mAh battery to drain faster than expected, restoring the phone’s signature feature.
- Fix Wi-Fi Connectivity Issues: A fresh installation of the factory OS can resolve common Lollipop bugs where Wi-Fi fails to connect or drops unexpectedly.
- Improve System Performance: By reinstalling the original, optimized operating system, you can eliminate the lag and stuttering that develops over time from software bloat.
- Unbrick a Dead Phone: Flashing the firmware is often the only way to revive a Lyf Wind 4S that has become completely unresponsive or “hard bricked.”
⚠️ Important Prerequisites
Before you begin, back up any accessible data. This process will completely erase all data from the phone’s internal storage.
- The latest version of the QPST Flash Tool (with QFIL).
- The correct Qualcomm HS-USB QDLoader 9008 drivers installed on your PC.
How to Flash the Firmware
This firmware must be installed using the QFIL application. The process involves booting the phone into EDL mode and loading the specific programmer and XML files from the firmware.
- Download and extract your chosen firmware package (e.g., `WIND-4s LS-5018… .rar`).
- Install the Qualcomm HS-USB QDLoader 9008 drivers and the QPST Flash Tool on your PC.
- Boot your phone into EDL Mode (usually by holding Volume Up + Volume Down and connecting the USB cable).
- Launch QFIL and load the programmer file (e.g., `prog_emmc_firehose_8909.mbn`) and the `rawprogram0.xml` and `patch0.xml` files from the firmware folder.
- Click “Download” to begin the flashing process.
For a complete, step-by-step tutorial with screenshots and troubleshooting, please follow our master guide:
→ How to Flash Qualcomm Firmware Using QFIL
Disclaimer: Flashing firmware is an advanced procedure. Using the wrong tool or files can permanently damage your device. Proceed with extreme caution. We are not responsible for any data loss or hardware issues.
