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+# Bootloader Update Manager
+
+A C-based web application for updating kernel, device-tree, and U-Boot environment files on Orange Pi Zero 2W.
+
+## Features
+
+- **Web Interface**: Modern, responsive UI for easy file management
+- **Kernel Update**: Upload `Image.gz` to boot partition
+- **Device-Tree Update**: Upload `sun50i-h618-orangepi-zero2w.dtb`
+- **U-Boot Environment**: Upload `uboot.env`
+- **extlinux.conf Editor**: View and edit boot configuration
+- **Progress Bar**: Real-time upload progress tracking
+- **Auto-mount**: Automatically mounts `/dev/mmcblk1p1` to `/media`
+- **Large File Support**: Upload files up to 200MB
+
+## Requirements
+
+- GCC compiler
+- [Mongoose](https://mongoose.ws) - Embedded web server
+- [cJSON](https://github.com/DaveGamble/cJSON) - JSON parser
+- Root privileges (for mounting devices)
+
+### Installing Dependencies
+
+**Ubuntu/Debian:**
+```bash
+# Install mongoose (or build from source)
+sudo apt-get install libmongoose-dev
+
+# Install cJSON
+sudo apt-get install libcjson-dev
+```
+
+**Build from source:**
+```bash
+# Mongoose
+git clone https://github.com/cesanta/mongoose.git
+cd mongoose && make && sudo make install
+
+# cJSON
+git clone https://github.com/DaveGamble/cJSON.git
+cd cJSON && mkdir build && cd build && cmake .. && make && sudo make install
+```
+
+## Building
+
+```bash
+make
+```
+
+## Running
+
+```bash
+sudo make run
+# or
+sudo ./up
+```
+
+The server will start on **http://localhost:8080**
+
+## API Endpoints
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/api/upload` | POST | Upload files (kernel, dtb, uboot) |
+| `/api/extlinux` | GET | Read extlinux.conf |
+| `/api/extlinux` | POST | Write extlinux.conf |
+| `/api/progress` | GET | Get upload progress |
+| `/api/mount` | GET | Get mount status |
+
+## Upload Parameters
+
+For `/api/upload`:
+- `type`: File type (`kernel`, `dtb`, or `uboot`)
+- `file`: The file to upload
+
+## File Locations
+
+| Type | Destination File |
+|------|------------------|
+| Kernel | `/media/Image.gz` |
+| Device-Tree | `/media/sun50i-h618-orangepi-zero2w.dtb` |
+| U-Boot Env | `/media/uboot.env` |
+| Extlinux | `/media/extlinux.conf` |
+
+## Project Structure
+
+```
+.
+├── main.c          # Main application (C server)
+├── index.html      # Web interface HTML
+├── style.css       # Web interface styles
+├── app.js          # Frontend JavaScript
+├── Makefile        # Build configuration
+└── README.md       # This file
+```
+
+## Screenshots
+
+The web interface includes:
+- System status panel showing mount state
+- Tabbed upload interface for different file types
+- Real-time progress bar during uploads
+- Full-featured text editor for extlinux.conf
+
+## Security Notes
+
+⚠️ **Warning**: This application requires root privileges to mount devices. Use with caution and ensure proper access controls in production environments.
+
+## License
+
+MIT License