update readme

README.md

@@ -1,15 +1,22 @@
-# ISO Drive
+# ISO Droid
 
 Android app for mounting ISO/IMG files as USB mass storage or CD-ROM devices on rooted Android devices.
 
+## Screenshots
+
+Screenshots are available in the [docs/screenshots/](docs/screenshots/) directory.
+
 ## Features
 
 - Mount ISO/IMG files as USB mass storage or CD-ROM
+- Create blank IMG files for writable USB drives
 - Read-only or read-write mount options
 - Persistent notification with quick unmount button
-- Browse and select ISO files from device storage
+- Browse and select ISO/IMG files from device storage
+- OS-specific icons for popular distributions (Linux, BSD, etc.)
 - Download links to popular operating systems (Linux, BSD, Windows, Recovery tools)
-- Material 3 dynamic theming
+- Rename and delete files
+- Material 3 dynamic theming with dark mode support
 
 ## Requirements
 
@@ -19,26 +26,73 @@ Android app for mounting ISO/IMG files as USB mass storage or CD-ROM devices on
 
 ## Installation
 
-1. Install the [isodrive](https://github.com/nitanmarcel/isodrive) binary via the [Magisk module](https://github.com/nitanmarcel/isodrive-magisk/releases/latest) or manually
-2. Install the ISO Drive APK
+### Option 1: Install APK (Recommended)
+1. Download the latest ISO Droid APK from releases
+2. Install the APK
+3. Grant root access when prompted
+4. The app includes a bundled isodrive binary
+5. Place your ISO/IMG files in `/sdcard/isodrive/` (or configure a different directory in settings)
+
+### Option 2: Install with Magisk Module
+1. Install the [isodrive Magisk module](https://github.com/nitanmarcel/isodrive-magisk/releases/latest)
+2. Install the ISO Droid APK
 3. Grant root access when prompted
 4. Place your ISO/IMG files in `/sdcard/isodrive/` (or configure a different directory in settings)
 
+## Building from Source
+
+### Prerequisites
+
+Before building the app, you need to obtain the `isodrive` binary:
+
+1. The `isodrive` binary is compiled from [nitanmarcel/isodrive](https://github.com/nitanmarcel/isodrive)
+2. Place the compiled binary at `app/src/main/assets/bin/isodrive` before building
+3. The binary must be executable and compiled for the appropriate Android architecture
+
+### Build Steps
+
+```bash
+# Clone the repository
+git clone https://github.com/yourusername/ISODroid.git
+cd ISODroid
+
+# Ensure isodrive binary is present
+ls -la app/src/main/assets/bin/isodrive
+
+# Build the APK
+./gradlew assembleRelease
+```
+
 ## Usage
 
-1. Open ISO Drive
+1. Open ISO Droid
 2. Select an ISO/IMG file from the list
 3. Choose mount options (Mass Storage or CD-ROM, Read-Only or Read-Write)
 4. Tap Mount
-5. Connect your phone to a PC via USB - it will appear as a USB drive
+5. Connect your phone to a PC via USB - it will appear as a USB drive/CD-ROM
 6. Unmount via the app or notification when done
 
+### Creating Custom IMG Files
+
+1. Tap the "+" button in the top bar
+2. Enter a filename and size
+3. The app will create a blank IMG file that can be mounted as a writable USB drive
+4. Format it on your PC after mounting (FAT32, exFAT, NTFS, etc.)
+
 ## Credits
 
-- [isodrive](https://github.com/nitanmarcel/isodrive) by nitanmarcel - The CLI tool that powers ISO Drive
+- [isodrive](https://github.com/nitanmarcel/isodrive) by nitanmarcel - The CLI tool that powers ISO Droid
 - [ISODriveUT](https://github.com/fredldotme/ISODriveUT) by fredldotme - Original inspiration for isodrive
 - OS icons from [Simple Icons](https://simpleicons.org/)
 
+## Technical Details
+
+ISO Droid uses the `isodrive` binary to interface with the Linux USB gadget subsystem. The app:
+- Bundles the isodrive binary in `app/src/main/assets/bin/`
+- Extracts and executes it with root permissions at runtime
+- Supports both configfs (modern) and sysfs (legacy) USB gadget modes
+- Dynamically detects available OS icons for file display
+
 ## License
 
 MIT