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bobberdolle1 edited this page Jan 7, 2026 · 6 revisions

OpenFlash Wiki

🇷🇺 Русская версия

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$4 hardware. Free software. Read any flash chip.

📚 Documentation

Guide Description
🆕 Complete Beginner's Guide Never used a flash programmer? Start here!
Getting Started Installation and first steps
Hardware Setup Wiring diagrams for all platforms
Supported Chips 230+ supported flash chips
Troubleshooting Common problems and solutions
FAQ Frequently asked questions

🤔 What is OpenFlash?

OpenFlash reads data from flash memory chips — the storage inside routers, IoT devices, game consoles, SSDs, and basically any electronic device.

Commercial programmers cost $200-2000. OpenFlash uses a $4 microcontroller.

┌─────────────────────────────────────────────────────────────────┐
│                                                                 │
│   Your Computer          $4 Microcontroller       Flash Chip    │
│   ┌──────────┐           ┌──────────────┐        ┌─────────┐   │
│   │ OpenFlash│◄── USB ──►│ Raspberry Pi │◄─wires─►│ NAND    │   │
│   │   App    │           │    Pico      │        │ Memory  │   │
│   └──────────┘           └──────────────┘        └─────────┘   │
│                                                                 │
│   All the brains         Dumb pipe              Your secrets   │
│   (ECC, analysis, AI)    (just GPIO)            live here      │
│                                                                 │
└─────────────────────────────────────────────────────────────────┘

⚡ Quick Start

No hardware? Try it now!

  1. Download OpenFlash
  2. Click Mock → Scan → Connect
  3. Click Dump NAND
  4. Explore: Hex View, Bitmap, Analysis, AI

Got a Raspberry Pi Pico?

  1. Download firmware: openflash-rp2040.uf2
  2. Hold BOOTSEL, plug USB, drop file
  3. Wire to your chip (see diagrams)
  4. Open app → Scan → Connect → Dump

🔧 Supported Hardware

Microcontrollers

Platform Price Speed USB Best For
Raspberry Pi Pico ~$4 ⭐⭐ Full Speed Beginners
Raspberry Pi Pico 2 ~$5 ⭐⭐⭐ Full Speed NV-DDR NAND
STM32F4 Black Pill ~$5 ⭐⭐⭐ Full Speed Best MCU value
Teensy 4.0/4.1 ~$20-30 ⭐⭐⭐⭐⭐ High Speed Speed demons ⚡
Arduino GIGA R1 ~$60 ⭐⭐⭐⭐ High Speed Enterprise + WiFi
ESP32 ~$4 ⭐⭐ UART/USB Wireless

Single Board Computers

Platform Price Speed Best For
Raspberry Pi 4/5 ~$35-75 ⭐⭐⭐⭐ Headless server
Orange Pi ~$15-50 ⭐⭐⭐ Budget SBC
Banana Pi ~$15-35 ⭐⭐⭐ RISC-V option 🍌

Flash Types

Type Chips Interface
Parallel NAND 60+ 8-bit bus, 14 wires
SPI NAND 55+ 4 wires
SPI NOR 75+ 4 wires
eMMC 40+ 4 wires (SPI mode)
UFS 10+ Detection only

🎯 Use Cases

Use Case Description
Firmware extraction Dump firmware from routers, cameras, IoT devices
Data recovery Recover data from damaged flash storage
Security research Analyze firmware for vulnerabilities
Reverse engineering Understand how devices work
Embedded development Debug and test flash operations
Forensics Extract evidence from devices
Education Learn how flash memory works

🧠 Key Features

Reading & Writing

  • Read any supported flash chip
  • Write/program chips with verification
  • Bad block management
  • Wear leveling tracking

Analysis

  • AI-powered pattern detection — finds encrypted, compressed, executable regions
  • Filesystem detection — SquashFS, UBIFS, JFFS2, ext4, FAT
  • ECC correction — Hamming, BCH-4/8/16
  • Encryption key search — finds AES keys in dumps
  • Wear analysis — estimates remaining chip life

Automation

  • Python API — pip install pyopenflash
  • CLI tool — openflash read -o dump.bin
  • Batch processing — process multiple chips
  • REST API — integrate with your tools

Cloud (v3.0+)

  • Sync dumps across devices
  • Team collaboration
  • Community chip database
  • AI model updates

📊 Speed Comparison

Platform 1GB Dump Time Transfer Speed
Teensy 4.1 3-5 min ~3-5 MB/s
Arduino GIGA ~10 min ~1.5 MB/s
Raspberry Pi 4 ~12 min ~1.3 MB/s
STM32F4 ~25 min ~650 KB/s
RP2350 ~30 min ~550 KB/s
RP2040 ~45 min ~370 KB/s
ESP32 ~50 min ~330 KB/s

Teensy 4.x uses USB High Speed (480 Mbit/s) — 10-20x faster than other MCUs!

🆘 Getting Help

Resource Link
📖 This wiki You're here!
💬 Discussions GitHub Discussions
🐛 Bug reports GitHub Issues
📧 Email support@openflash.io

🤝 Contributing

We welcome contributions!

  • Test chips — Report working/non-working chips
  • Fix bugs — Submit pull requests
  • Improve docs — Help others learn
  • Translate — Add your language

See CONTRIBUTING.md

OpenFlash v3.0 · MIT License · Made with ❤️ by the community

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