How to Install or Update Wi-Fi Drivers on Android: 5 Working Methods

Wi-Fi connection issues on an Android device are often related to a faulty wireless adapter driver. Unlike Windows, where drivers are installed through the Device Manager, on Android the process requires different approaches—from a simple reboot of the module to manual flashing via ADB or TWRPIn this article, we'll cover all the current methods for restoring Wi-Fi, including cases where the network disappears after a firmware update or a factory reset.

It is important to understand that the term "driver" in the context of Android usually refers to Wi-Fi/Bluetooth module firmware (often combined into one chip, for example, Broadcom BCM4356 or Qualcomm WCN3990). These modules are controlled by firmware—low-level software that can be damaged by unsuccessful updates or experiments with custom firmware. We'll cover both software solutions (without root access) and methods for experienced users.

If your smartphone can't detect networks, constantly loses connection, or displays the "Saved, WPA/WPA2 protected" error, don't rush to take it to a service center. In 80% of cases, the problem can be resolved independently—the key is to properly diagnose the cause.

1. Diagnosing the problem: driver or hardware failure?

Before you install drivers, make sure the problem is software-related. Here are the key signs: corrupted Wi-Fi driver:

• 🔍 The smartphone does not find any networks, although other devices see them (including 2.4 GHz and 5 GHz)
• 🔄 Wi-Fi turns on, but after a few seconds it disconnects with the error "Connection interrupted"
• 📱 In Settings → Wi-Fi the status "Turning on..." is displayed endlessly
• 🔧 After updating Android, both Wi-Fi and Bluetooth stopped working (they often use the same chip).

If it's a smartphone sees networks but doesn't connect (asks for a password or displays "Authentication..."), the problem is most likely with the router settings or incompatibility of security protocols. In this case, try:

• 🔒 Change the encryption type on the router WPA3 on WPA2-PSK (AES)
• 📶 Disable the "Smart Connect" feature (automatic switching between 2.4/5 GHz) in the router settings
• 🔄 Reboot your router and smartphone simultaneously (sometimes helps with DHCP conflicts)

⚠️ Attention: If Wi-Fi doesn't work after the device has been dropped, exposed to water, or disassembled, it's almost always hardware failure (Antenna failure, chip damage). In this case, installing drivers won't help; repairs are required.

2. Method 1: Rebooting the Wi-Fi module without root (the safest method)

In most cases, Wi-Fi failures are due to a temporary driver freeze. Android allows you to reboot the module without root access via airplane mode or chip power off.

Follow these steps in order:

1. Open Settings → System → Reset (on some firmware versions the path may differ).
2. Select Reset Wi-Fi, mobile network, and Bluetooth settings (do not confuse with a full reset!).
3. Confirm the action. The smartphone will reboot.
4. After turning on, activate airplane mode for 30 seconds, then turn off.
5. Try connecting to the network again.

If this doesn't help, try forced reboot of the driver through the engineering menu (works on most devices on Qualcomm):

##4636## → About phone → Menu (three dots) → Wi-Fi information → Disable Wi-Fi → Enable Wi-Fi

⚠️ Attention: On some firmware (for example, MIUI or ColorOS) The engineering menu may be locked. Do not attempt to enter other codes—this may reset the settings!

Check that the router is working (connect another device)

Write down passwords for all saved networks

Disable VPN or proxy (they may block diagnostics)

Make sure your smartphone has enough battery (at least 30%)-->

3. Method 2: Updating the module firmware via OTA or ADB

If the reset doesn't help, the next thing to try is update the Wi-Fi module firmware via standard OTA update or manually via ADBThis method is suitable if the problem appeared after an Android update or a factory reset.

Option A: Update via settings (without a PC)

• 📱 Go to Settings → System → Software Update.
• 🔄 Click "Check for updates." If a new version is available, install it.
• 🔧 After the update, reset your network settings (see Method 1).

Option B: Manual firmware update via ADB (requires PC)

This method is suitable for devices where Wi-Fi stopped working after an unsuccessful update. You will need:

• 💻 A computer with installed ADB and Fastboot
• 🔌 USB cable (preferably original)
• 📄 Firmware file for your module (can be found on the forums) XDA Developers or 4PDA)

Instructions:

1. Download the archive with firmware for your smartphone model (for example, for Samsung Galaxy S22 it could be a file wlan.mdt or WCNSS_qcom_wlan_nv.bin).
2. Connect your smartphone to your PC and activate it. USB debugging V Settings → For developers.
3. Open a command prompt in the folder with ADB and run:

   adb shell
   su
   dd if=/sdcard/Download/wlan.mdt of=/dev/block/bootdevice/by-name/wlan

   (paths may differ - check for your model!)

4. Restart your device.

⚠️ Attention: Incorrect firmware flashing may result in complete loss of Wi-Fi and Bluetooth! Use only files designed for your exact chip model and version. If you're unsure, consult specialized forums.

4. Method 3: Installing the driver via TWRP (for flashed devices)

If you have it installed on your smartphone custom TWRP recovery, you can flash the Wi-Fi driver manually. This method is suitable for devices with unlocked bootloader and works even if Android doesn't boot.

You will need:

• 📱 Installed TWRP Recovery (version 3.5+)
• 💾 Firmware file in format .img or .zip (For example, wcnss_qcom_wlan_nv.zip)
• 🔌 USB OTG flash drive or memory card (if the smartphone is not detected by the PC)

Step-by-step instructions:

1. Download the appropriate firmware file for your chip (see spoiler above).
2. Move it to a memory card or flash drive (if you use OTG).
3. Boot into TWRP (usually by clamping Power + Volume Up).
4. Select Install → specify the path to the firmware file.
5. Swipe to confirm. Once done, tap Reboot System.

If Wi-Fi doesn't work after flashing the firmware, try:

• 🔄 Flash another firmware file (sometimes you need a pair wlan.mdt + wlan.bXX).
• 🧹 Execute Wipe → Advanced Wipe → Dalvik/ART Cache in TWRP.
• 🔧 Check if file permissions are correct (in TWRP: File Manager → go to /vendor/firmware → check file permissions wlan*).

5. Method 4: Recovery via Fastboot (for devices without TWRP)

If your smartphone doesn't have TWRP, but there is an unlocked bootloader, you can flash the Wi-Fi driver through FastbootThis method is suitable for devices Google Pixel, OnePlus and others with support fastboot flash.

Prerequisites:

• 💻 Installed ADB and Fastboot on PC
• 🔓 Unlocked bootloader (OEM Unlock in the developer settings)
• 📄 Firmware file in format .img (For example, wlan.elf)

Instructions:

1. Connect your smartphone to the PC and reboot it Fastboot Mode (usually Power + Volume Down).
2. Open a command prompt in the folder with Fastboot and check the connection:

   fastboot devices

   (the device's serial number should be displayed).

3. Flash the firmware file (example for Qualcomm):

   fastboot flash wlan /path/to/file/wlan.mdt
   fastboot reboot

For devices on Mediatek the command may look different:

fastboot flash --slot=all wifi /path/to/file/WiFi.mt6768.bin

⚠️ Attention: On some devices (eg. Samsung With Exynos) Flashing via Fastboot can lock the bootloader. Before starting, check if your model supports this command. fastboot flash for the section wlan.

6. Method 5: Manually replacing firmware files (for advanced users)

If none of the methods worked, you can try Manually replace firmware files through Root Explorer or ADB ShellThis method requires permissions. root and is only suitable for users who understand the structure of the Android file system.

Typical paths to firmware files:

• /vendor/firmware/wlan/ (most devices)
• /system/etc/firmware/ (older versions of Android)
• /persist/ (for some chips Qualcomm)

Algorithm of actions:

1. Download the archive with firmware for your chip (see the table above).
2. Unzip it and find files with extensions .bin, .mdt, .bXX.
3. Connect to the device via ADB or open Root Explorer.
4. Copy the files to the appropriate folder (for example, /vendor/firmware/wlan/), replacing the existing ones.
5. Set the correct permissions (usually 644 or 755):

   adb shell
   su
   chmod 644 /vendor/firmware/wlan/*
   chown root:root /vendor/firmware/wlan/*

6. Restart your device.

Critical: On devices with partition /persist (For example, Sony Xperia or LG) Incorrectly editing files can result in loss of IMEI! Back up the folder before editing.

7. If nothing helps: hardware issues and a service center

If you have tried all software methods but Wi-Fi still does not work, the problem may be:

• 📡 Damaged antenna (often after falls or disassembly).
• 🔥 Burnt-out Wi-Fi/Bluetooth chip (for example, after overheating or short circuit).
• 🔌 The disconnected cable (relevant for collapsible devices like Samsung Galaxy S or Xiaomi Redmi Note).
• 🔋 Faulty power supply (The Wi-Fi chip may not be getting enough voltage).

How to check for hardware failure:

• 🔍 Connect your smartphone to your PC and run the command:

  adb shell dmesg | grep wlan

  If there are errors in the log like wlan: Failed to load firmware — a software problem. If the log is empty or contains wlan: Hardware error - hardware.

• 📱 Check if the area around the camera (usually the Wi-Fi chip) is getting hot. Overheating indicates a short circuit.
• 🔧 Disassemble the device (if you have experience) and inspect the antenna contacts on the motherboard.

Cost of repairs at a service center:

⚠️ Attention: If your smartphone is under warranty, do not attempt to repair it yourself! Opening the case or flashing the firmware via Fastboot/TWRP will void the warranty. Contact an authorized service center.

FAQ: Frequently Asked Questions about Wi-Fi Drivers on Android