Updating Wi-Fi on Android: Drivers, Firmware, Settings – A Complete Guide

Weak Wi-Fi signal, constant connection drops, or slow internet speed on a smartphone are typical problems faced by users. AndroidMany people mistakenly believe that the router or ISP is to blame, but often the root of the problem lies in outdated Wi-Fi module drivers, outdated phone firmware, or incorrect network settings. In this article, we'll cover all the ways to update Wi-Fi on Android-devices - from basic to advanced, including manual module reflashing and optimization of connection parameters.

It's important to understand: the term "updating Wi-Fi" can mean different things. For some, it means installing the latest version of the smartphone firmware (which also updates network drivers), while for others, it means reflashing the firmware itself. Wi-Fi/Bluetooth module (for example, on Qualcomm or Broadcom), and for others, resetting network settings to factory defaults. We'll look at all options, paying special attention to models Android 14+, where Google has radically changed the mechanism for managing network adapters.

If your phone suddenly stops detecting networks, connects only to 2.4 GHz (ignoring 5 GHz), or shows speeds below 100 Mbps with a 1 Gbps plan, the problem is most likely software-related. Let's start with simple solutions and gradually move on to more complex ones.

1. Check the current version of firmware and Wi-Fi drivers

Before updating anything, you need to understand what software versions are installed on your device. This will help determine whether an update is worthwhile or whether the problem lies elsewhere (for example, a hardware fault with the antenna).

To find out the firmware version:

1. Open Settings → About phone.
2. Find the items Android version, MIUI/One UI/ColorOS version (depending on the manufacturer) and Build number.
3. Write down or take a photo of this information - it will be useful when searching for updates.

Finding the Wi-Fi module driver version is more difficult: this information is not included in the default settings. To do this, you'll need:

• 🔧 Install the app DevCheck or AIDA64 from Google Play.
• 📱 Go to section Network → Wi-Fi (V AIDA64 This Devices → Network Interfaces).
• 🔍 Find lines with Driver Version, Firmware Version or Chipset (For example, Qualcomm WCN6855).

If you see the inscription in the list of devices Unknown or a driver date older than 2022 is a direct signal to update. This is especially relevant for phones with MediaTek (For example, Redmi Note 11 or Realme 9 Pro), where problems with Wi-Fi 6 are often solved only by flashing the module.

2. Updating Android firmware (system method)

The safest and most recommended way to update your Wi-Fi drivers is to install the latest firmware from the manufacturer. In 90% of cases, this is enough to fix connection issues, as system updates contain the latest versions. network stacks and firmware for chipsets.

Update instructions:

1. Connect your phone to a charger or make sure the battery charge is more than 50%.
2. Go to Settings → System → System Update (on Samsung: Settings → Software Update).
3. Click Checking for updates and wait for the result.
4. If an update is found, download and install it. Your phone will reboot automatically.

Important nuances:

• 🔄 On phones Xiaomi, Oppo And Vivo Updates may be delayed - check manually once a week.
• 📦 If your phone is running low on space, the system may not show available updates. Free up at least 2 GB of space.
• ⚡ On some models (for example, Samsung Galaxy S22) updates come in parts: first security, then system.

If the system says there are no updates, but you know about the release of a new version (for example, from the news), try:

• 🌐 Download the firmware manually from the manufacturer's official website (Support section).
• 📲 Use proprietary utilities like Samsung Smart Switch or Xiaomi PC Suite.
• 🔧 For advanced users: flash via fastboot or ODIN (only if you have experience!).

⚠️ Attention: On phones with unlocked bootloader (bootloader) System updates may fail. Before installing, back up your data via TWRP or Google Drive.

3. Manually update Wi-Fi module drivers

If a system update doesn't help or isn't available, you can try updating your Wi-Fi drivers separately. This method works for phones with chipsets Qualcomm (For example, Snapdragon 8 Gen 2) And MediaTek (For example, Dimensity 9000), where the Wi-Fi module has its own firmware.

Manual update methods:

Example of updating via ADB (for advanced users):

adb shell
su
dd if=/sdcard/wifi_firmware.bin of=/vendor/firmware/wlan/wifi_fw.bin
chmod 644 /vendor/firmware/wlan/wifi_fw.bin
reboot

Where wifi_firmware.bin — the module firmware file downloaded from the official website of the chipset manufacturer (for example, Qualcomm Developer Network). Never use firmware from third-party resources! - this may lead to irreversible damage to the module.

What should I do if Wi-Fi disappears completely after updating the firmware?

If after manually updating the drivers the Wi-Fi module stops working (doesn't turn on, doesn't search for networks), try:

1. Reset network settings in Settings → System → Reset → Reset Wi-Fi/Bluetooth.

2. Flash the original firmware of the module (search on forums like XDA Developers or 4PDA).

3. If nothing helps, take the phone to a service center: it may be damaged. NVRAM- module memory.

4. Optimize Wi-Fi settings to improve connection

Sometimes the problem isn't with the drivers, but with incorrect network settings. Modern phones on Android 12+ have hidden Wi-Fi settings that can be adjusted to improve stability and speed.

How to open hidden settings:

1. Turn on developer mode: go to Settings → About phone and press 7 times Build number.
2. Return to Settings → System → Developer Options.
3. Find the section Network settings or Wi-Fi.

Recommended parameters for optimization:

• 📶 Wi-Fi scanning is always available — turn it off (saves battery power).
• 🔄 Automatic connection to open networks — turn it off (prevents connections to unsafe points).
• 🚀 Wi-Fi Performance Mode — turn on (increases the priority of network traffic).
• 🔒 Weak network alerts — turn on (helps avoid “dead” spots).

For phones on Android 14 a new feature has appeared - Wi-Fi Standard Mode, which allows you to manually select the communication standard (802.11ac, 802.11ax). If your router supports Wi-Fi 6 (802.11ax), but the phone only connects via 802.11n, force install 802.11ax in the developer settings.

5. Reset network settings and reconnect to Wi-Fi

If updates don't help and Wi-Fi is unstable, the next step is to reset your network settings to factory defaults. This will delete all saved networks, VPN configurations, and Bluetooth settings, but it often resolves connection issues.

How to reset settings:

1. Go to Settings → System → Reset.
2. Select Reset Wi-Fi, mobile network, and Bluetooth settings.
3. Confirm the action and wait for the reboot.
4. After turning on your phone, reconnect to your Wi-Fi network.

After reset:

• 🔑 Re-enter your Wi-Fi password (it is not saved after reset).
• 📡 If the 5 GHz network is not visible, check if support is enabled 802.11a in the router settings.
• 🔄 Reboot your router—sometimes the problem lies in its DHCP cache.

⚠️ Attention: On phones Samsung With One UI 5.0+ resetting network settings may also delete certificates eSIMIf you're using a virtual SIM card, save its profile before resetting.

6. Checking for hardware problems

If none of the software solutions worked, the problem might be hardwareThe antenna is damaged, the Wi-Fi module cable is loose, or the chip itself is faulty. This is especially true for phones that have been dropped, wet, or exposed to high temperatures for extended periods.

How to diagnose a hardware failure:

• 🔍 Check if it works Bluetooth - If not, most likely the common module is damaged Wi-Fi/Bluetooth.
• 📱 Connect your phone to a different router or create a hotspot from another device. If the problem persists, the phone is to blame.
• 🛠️ Disassemble the phone (if you have experience) and check if the Wi-Fi antenna cable has come loose (usually located near the top of the board).

Typical hardware failures:

If you're unsure of your abilities, it's best to contact a service center. The average cost of repairing a Wi-Fi module is Android-phones in 2026:

• 💰 Antenna replacement: 1,500–3,000 ₽.
• 💰 Wi-Fi/Bluetooth module replacement: 3,000–8,000 ₽ (depending on the model).
• 💰 Diagnostics + cable soldering: 2,000–5,000 ₽.

7. Alternative solutions: USB adapters and mesh systems

If updating your phone's Wi-Fi isn't possible (for example, the manufacturer has stopped supporting the model), but your router is up-to-date, you can try a workaround:

Option 1: USB Wi-Fi adapter with OTG support

• 🔌 Connect to your phone via USB-C/OTG external Wi-Fi adapter (for example, TP-Link TL-WN725N).
• 📱 Install drivers via Google Play (apps like USB WiFi Driver).
• 🚀 The speed can increase to 300–400 Mbps (if the adapter supports it) 802.11ac).

Option 2: Mesh system or signal repeater

• 📡 Install Mesh router (For example, TP-Link Deco or ASUS ZenWiFi) to enhance the signal.
• 🔄 Set up roaming between the dots - the phone will automatically connect to the most powerful one.
• 📶 If Mesh is expensive, use it Wi-Fi repeater (For example, Xiaomi Wi-Fi Repeater 2).

Option 3: Mobile Internet (4G/5G)

• 📶 If Wi-Fi is fundamentally not working, switch to mobile data with an unlimited plan.
• 🔄 Turn on Modem mode and share the Internet from another phone.

FAQ: Frequently asked questions about updating Wi-Fi on Android

My phone can't detect 5 GHz networks. How can I fix this?

The reasons may be different:

1. Outdated drivers - update your phone firmware.
2. The mode is disabled in the router settings. 802.11a/n/ac (needs to be enabled).
3. Regional restrictions: In some countries, 5 GHz only works on channels 36–48 (check your router settings).
4. Hardware problem: on cheap phones (eg. Redmi 9A) may not support 5 GHz.

To check if your phone supports 5GHz, install the app WiFi Analyzer and see if networks in the 5000-5800 MHz range are displayed.

After the update, my Wi-Fi performance has gotten worse. What should I do?

This is a common issue when updating firmware. Try:

• 🔄 Roll back to the previous firmware version (if you have a backup).
• 📱 Reset network settings (Settings → System → Reset).
• 🛠️ Manually flash the old version of the Wi-Fi driver (if you have experience).
• 📡 Check if your settings have changed DNS or MTU in the router.

If nothing helps, contact the manufacturer's support team—it might be a known bug in the new firmware.

Is it possible to update Wi-Fi on a phone without root access?

Yes, but with restrictions:

• 📱 System update — updates drivers without root.
• 🔧 Reset settings — also does not require root.
• 📦 Manual update via fastboot - possible on some models (for example, Google Pixel), but risky.

For deep intervention (replacing files in /vendor/firmware) root rights mandatory.

How do I find out which Wi-Fi module is installed in my phone?

Methods:

1. Use apps DevCheck or AIDA64 (chapter Network → Wi-Fi).
2. Check the model specifications on the manufacturer's website (e.g. GSMArena).
3. Disassemble the phone and look at the markings on the chip (for example, Qualcomm WCN6855 or Broadcom BCM4375).

The most common modules in 2023–2026:

• Qualcomm FastConnect 6900/7800 (flagships Snapdragon 8 Gen 2/3).
• MediaTek Filogic 630/830 (middle segment, for example, Redmi Note 12).
• Broadcom BCM4389 (old models Samsung And Google Pixel).

Is it worth flashing custom software (like LineageOS) to improve Wi-Fi?

This is a risky move that can either help or make the problem worse. Pros:

• ✅ Up-to-date drivers (if the build is recent).
• ✅ No "garbage" from the manufacturer.

Cons:

• ❌ It might fly off IMEI or MAC address Wi-Fi.
• ❌ There is no guarantee of stability (especially on MediaTek-chipsets).
• ❌ Loss of functions like Wi-Fi 6E or Dual Band.

If you decide to, choose assemblies marked Official and check reviews on forums (XDA, 4PDA).