Where are drivers stored in Android: hidden folders, system paths and access methods

Android drivers are low-level components that ensure interaction between the smartphone hardware (camera, Wi-Fi module, sensors) and the operating system. Unlike Windows, where drivers are often installed manually, in Android they are integrated into the firmware and updated along with it. But what to do if you need to find these files to debug, modify or restore the device?

The problem is that manufacturers rarely document the location of drivers, and system folders /system and /vendor are often hidden from the user. In this article, we will look at where exactly drivers are stored in different versions of Android (from Android 8.0 Oreo to Android 15), how to access them without root access and with root, as well as what tools will help you extract or replace them. We will pay special attention to drivers for camera, modem and graphics accelerator the most problematic components when customizing firmware.

What are drivers in Android and why look for them

A driver in Android is a software module that translates operating system commands into instructions for hardware. The following will not work without drivers:

• 📷 Camera (drivers camera.hal or camera_provider)
• 📶 Modem and cellular communications (drivers rild, qcrild)
• 🎮 Sensors (accelerometer, gyroscope, compass - drivers sensors.hal)
• 🖥️ Graphics processor (drivers gralloc, gpu_driver)
• 🔊 Audio system (drivers audio.hal, tinyalsa)

Why might a user need access to drivers?

• 🔧 Debugging problems: for example, the camera gives an error "Cannot connect to camera" —you need to check the integrity drivers.
• 🛠️ Firmware port: when installing custom firmware (for example, LineageOS), you often need to transfer drivers from the stock version.
• 🔄 Crash recovery: if after the update the sensors stopped working or Wi-Fi, driver conflict is to blame.
• 📱 Modification of functions: enthusiasts change camera drivers to improve photo quality (for example, port Google Camera to unofficial devices).

It is important to understand that drivers in Android are divided into two types:

1. Nuclear drivers (.ko files) - are loaded into the Linux kernel when the system starts. They are located in /lib/modules or built into the kernel itself (boot.img).
2. Custom drivers (.so libraries) - work at the HAL level (Hardware Abstraction Layer). They are located in /system/lib, /vendor/lib.

Where are the drivers in Android: the main paths

The location of the drivers depends on the version of Android and the architecture processor (ARM, ARM64, x86). Below is a table with typical paths for modern devices (starting from Android 8.0, when the separation of system and vendor components was introduced). Project Treble — separation of system and vendor components).

In Android 12+, manufacturers began to actively use dynamic loading of drivers through the mechanism Vendor Native Development Kit (VNDK)This means that some drivers can be stored in compressed form in /vendor/dlkm and loaded. on demand.

How to check if the driver is in the system? Use the ADB command:

adb shell ls /vendor/lib/hw | grep camera

If the output is empty, the driver is either in another place or built into the kernel.

How to access drivers without root access

Without superuser rights (root) the possibilities are limited, but several methods are all do they work:

1. Through ADB (Android Debug Bridge)

ADB allows you to view system files, but not all. For example, you can see the contents /vendor, but not copy files from there:

adb shell
ls /vendor/lib/hw/camera* # Viewing camera drivers
ls /lib/modules # Viewing kernel modules

To copy a file to a PC (if permissions allow):

adb pull /vendor/lib/hw/camera.qti.so ~/Downloads/

2. Through a file manager with access to system folders

Applications like FX File Explorer or Solid Explorer can show system folders if you enable the "Show hidden files" and "Access to root directories" options. However:

• 🔒 You cannot copy files from /vendor or /system without root.
• 📂 Some folders (for example, /vendor/firmware_mnt) may be empty due to mounting on demand.

3. Through a backup (TWRP)

If a custom recovery is installed on the device (TWRP), you can create a backup partition vendor:

1. Boot into TWRP (usually Power + Vol Up).
2. Select Backup → Select Partitions to Back Up.
3. Mark Vendor and create a backup.
4. Copy the backup file to your PC and extract it from using 7-Zip.

Install ADB and drivers for your device on your PC

Enable USB debugging in the developer settings

Download a file manager with support for system folders (FX, Solid)

Check for TWRP (if you plan to backup)

Create a backup copy of important data-->

How to extract drivers with root access

Root access gives you full control over system files. Here are step-by-step guide for extracting drivers:

1. root access

Methods depend on the device model:

• 📱 Samsung: use Magisk + patch AP via Odinh.
• 📱 Xiaomi: unlock the bootloader via Mi Unlock Tool, then flash Magisk.
• 📱 Google Pixel: unlock the bootloader and flash Magisk via fastboot.

After getting root, install a file manager with support root (for example, Root Explorer or Mixplorer).

2. Search and copy drivers

Example for camera drivers:

1. Open Root Explorer and go to /vendor/lib/hw (or /vendor/lib64/hw for 64-bit).
2. Find files with names camera.* (for example, camera.qti.so for Qualcomm).
3. Copy them to /sdcard/Download or to an external memory card.

For kernel modules (.ko):

su
ls /lib/modules # View available modules
cp /lib/modules/msm_camera.ko /sdcard/

3. Extracting drivers from boot.img

If the drivers are built into the kernel (often the case in Android 12+), they can be extracted from boot.img:

1. Download boot.img from the device:

   adb pull /dev/block/bootdevice/by-name/boot

2. Unpack it using AIK (Android Image Kitchen):

   unpackimg boot.img

3. The drivers will be in the folder split_img/boot.img-kernel (knowledge of working with hex-edit).

Drivers for specific components: where to look

Let's take a look at where they are drivers for the most popular components.

1. Camera drivers

Responsible for the operation of the main and front cameras, HDR processing, night mode, etc. Paths:

• 📸 /vendor/lib/hw/camera.{device}.so — main HAL driver.
• 📸 /vendor/lib/rfs/msm/camera — firmware for the camera processor (on Qualcomm).
• 📸 /vendor/etc/camera — configuration files (for example, camera_config.xml).

Example command for extraction:

adb shell
su
cp -r /vendor/lib/hw/camera* /sdcard/camera_drivers/

2. Modem drivers (communications, 4G/5G)

These drivers are critical for calls, SMS and mobile data. Paths:

• 📶 /vendor/firmware_mnt/verinfo/ver_info.txt — modem version.
• 📶 /vendor/rfs/msm/mpss — firmware for Qualcomm.
• 📶 /vendor/lib/libqmi*so —libraries for working with the modem.

Attention: modem drivers are often tied to the IMEI of the device!

3. Graphics drivers (GPU)

Responsible for rendering the interface, games and video. Paths:

• 🎮 /vendor/lib/egl — OpenGL/Vulkan drivers.
• 🎮 /vendor/lib64/hw/gralloc.* —drivers for highlighting. graphics memory.
• 🎮 /vendor/firmware — firmware for GPU (for example, a6xx_gmu.bin for Adreno 6xx).

To check the current GPU driver, use the command:

adb shell dumpsys SurfaceFlinger | grep "GL renderer"

4. Sensor drivers

Control the accelerometer, gyroscope, proximity sensor. Paths:

• 🔄 /vendor/lib/hw/sensors.*so — main HAL driver.
• 🔄 /vendor/etc/sensors — calibration files.
• 🔄 /sys/class/sensors — virtual kernel files (can be read via cat).

Problems when working with drivers and their solutions

Working with drivers is fraught with errors.

1. Error "Permission denied" when copying

Even with root access, some files may be blocked due to SELinux. Solution:

su
setenforce 0 # Temporarily disable SELinux
cp /vendor/lib/hw/camera.qti.so /sdcard/
setenforce 1 # Enable it back

2. The driver is not suitable for the new firmware

If you port the driver from one firmware to another, a version conflict may occur. Check:

• 🔍 Compatibility of kernel versions (uname -a).
• 🔍 Processor architecture (arm, arm64, x86).
• 🔍 HAL version (for example, camera.hal@3.5 vs camera.hal@4.0).

3. The device does not boot after replacing the driver

If after modifying the drivers the system does not start:

1. Boot into TWRP and restore the backup partition vendor.
2. If there is no backup, flash the stock firmware via Odinh/Fastboot.
3. Check the download logs:

   adb logcat | grep -i "camera\|sensor\|gpu"

⚠️ Attention: on devices with Dynamic Partitions (for example, Pixel 4+, Samsung Galaxy S20+) partition vendor may be part of super.img. To modify it you will need a tool lpmake or lpunpack.

Tools for working with Android drivers

For To extract, modify and analyze drivers, you will need specialized tools.

To analyze driver compatibility, the commands are useful:

adb shell getprop ro.boot.hardware # Find out the platform (for example, "qcom" for Qualcomm)
adb shell cat /proc/cpuinfo # Processor architecture
adb shell ls -l /vendor/lib/hw # List of drivers HAL

FAQ: Frequently asked questions about drivers in Android

adb shell dmesg | grep -i wifi
adb shell logcat | grep -i wlan