Below is a practical workflow demonstrating how to unpack a system image, modify its contents, and repack it. Step 1: Unpacking the Image

The utility reads the binary header of an input file, identifies the compression format, maps the block layout, and extracts the internal payload into a standard folder structure while preserving file permissions and extended attributes (xattrs).

CLI Example: unpack_repack_v2 --repack ./extracted_output new_compiled_file.img

Unpack Repack Tool V2.0 (also known as "Auto Tool Unpack Repack .DAT & .IMG For Windows v2.0") is a Windows-based utility designed to extract and rebuild Android system image files. Released around late 2015 to early 2016, this tool was created by Kritsada Chaitan under the team "MTK THAI ROM MODDER". It was specifically developed to address the challenges posed by Android 5.0 Lollipop and newer versions, where system files became more compressed and harder to manipulate using traditional methods.

| Feature | V1.x | | | :--- | :--- | :--- | | Android 13 Boot Header | Partial | Full Support | | LZ4 Compression | No | Yes | | Sparse Image Detection | Manual | Automatic | | Repack Validation Checksum | Weak | CRC32 & SHA1 | | Multi-partition Super Image | No | Extracts from Super (via add-on) |

Performance has been significantly improved in V2.0, allowing for rapid processing of files. This efficiency is vital for users dealing with large volumes of data on a regular basis.

Follow this universal workflow to safely modify files using the tool. Step 1: Environment Setup Download the official archive.