If you’ve ever worked on a legacy firmware project or reverse-engineered a binary distribution, you’ve likely stumbled across an OZIP file. While the name sounds like a generic archive (a la .zip), in embedded circles, an OZIP often refers to an Offset-Zipped Image Package—a proprietary or semi-proprietary format used to store segmented memory images.
# Optional: extract files to a temp dir or just keep metadata
extracted_files = []
for entry in entries:
data = extract_and_decompress(ozip_path, entry, header_size)
# Optionally save each extracted file
out_name = f"extracted_entry.name"
with open(out_name, 'wb') as f:
f.write(data)
print(f"Extracted: out_name (len(data) bytes)")
extracted_files.append((entry, data))
3. Unpack ozip tool (by Hovatek)
- Type: Windows/Linux batch + binary
- Capability: Specifically unpacks Spreadtrum/Unisoc
.ozip files and auto-generates a Scatter file with correct offsets.
- Best for: Unisoc SC7731, SC9863, Tiger series.
4. Using Conversion Tools
If you're using a conversion tool, follow its specific instructions. Some tools allow you to load the OZIP file and then generate a compatible Scatter file. Ozip File To Scatter File Converter