Extract Vendor Blobs from Android Devices

Vendor blobs are proprietary libraries from manufacturers. You need them for device-specific hardware support.

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What Are Vendor Blobs?

Blobs (Binary Large Objects):

• Camera drivers
• Audio HAL
• GPU libraries
• Fingerprint HAL
• Sensor drivers
• RIL (Radio Interface Layer)

Without them, hardware won't work on custom ROMs.

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Method 1: From Running Device

Prerequisites

• Rooted device
• USB debugging enabled
• extract-files.sh script from device tree

Process

# Make script executable
chmod +x extract-files.sh

# Extract via ADB
./extract-files.sh

# Files saved to vendor/[vendor]/[device]/

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Method 2: From ROM Package

Extract from System Image

# Mount system image
mkdir mnt
sudo mount -o ro system.img mnt/

# Run extraction
./extract-files.sh ./mnt

# Unmount
sudo umount mnt

From Super Image

Modern devices use super.img:

# Extract super.img first
lpunpack super.img output/

# Then extract from system and vendor images

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Method 3: From OTA Package

# Extract OTA
unzip ota.zip

# Use payload_dumper for payload.bin
python3 payload_dumper.py payload.bin

# Extract from resulting images

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Proprietary Files List

Found in proprietary-files.txt:

# Camera
vendor/lib64/libcamxexternalformatutils.so
vendor/lib64/camera/camera.qcom.so

# Audio  
vendor/lib64/hw/audio.primary.default.so

# Sensors
vendor/lib64/sensors.ssc.so

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Updating Blobs

When device gets update:

1. Flash new stock ROM
2. Re-extract blobs
3. Compare with previous
4. Update ROM device tree

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Vendor blob extraction is essential for ROM development. Keep them updated with each firmware release.

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Keywords: extract vendor blobs, proprietary files android, rom development blobs, camera blob, vendor extraction