Converting an file is a multi-step process commonly used for flashing Oppo or Realme firmware onto MediaTek-based devices. An OZIP file is a proprietary, encrypted firmware format used by Oppo and Realme for stock recovery. A Scatter file, on the other hand, is a simple text-based memory map required by tools like the SP Flash Tool to understand the device’s partition structure. The Core Conversion Process
There is no "one-click" converter that goes directly from OZIP to a Scatter file. Instead, you must follow these logical steps: Decrypt OZIP to ZIP
: The OZIP must first be decrypted into a standard ZIP format. This is typically done using Python scripts such as oppo_ozip_decrypt or tools like Extract the Firmware
: Once you have the standard ZIP, extract its contents to access individual partition files (like system.img , or often internal Generate or Obtain the Scatter File From Extracted Contents : If the decrypted firmware contains an file, you can use specialized tools like the MCT OFP Extractor UMT (Ultimate Multi Tool) to extract a scatter file directly from it. Manual Generation : If no scatter file is present, you can generate one using MTK Droid Tools while your device is connected to a PC via USB debugging. Essential Tools for the Process How to convert OFP to scatter format for Mediatek
Converting an .ozip file (typically an encrypted Oppo/Realme firmware format) into a Scatter file (used by MediaTek's SP Flash Tool) is a two-step process. You cannot convert them directly; you must first extract the firmware to access the internal components.
Here is a comprehensive guide on how to handle this conversion. Understanding the Process
OZIP: A proprietary, encrypted ZIP format used by Oppo and Realme for OTA updates.
Scatter File: A text file (MTxxxx_Android_scatter.txt) that tells flash tools where to write specific partitions on a MediaTek (MTK) device.
The Goal: Decrypt the .ozip, extract the raw partition images, and then locate or generate the scatter file. Step 1: Decrypt the .ozip File
Since .ozip files are encrypted, you need a decryption tool to turn them into a standard .zip file.
Download a Decryption Tool: Use a tool like Oppo_Free_Tool or the Python OZIP Decryptor script. Run the Decryptor: Place your firmware file in the same folder as the tool. Ozip File To Scatter File Converter
Run the script/command (e.g., python ozipdecrypt.py firmware.ozip).
Result: You will get a standard .zip file containing the firmware contents. Step 2: Extract the Firmware Contents Open the newly created .zip file.
Inside, you will find several .img or .bin files (system.img, boot.img, recovery.img, etc.). Crucial: Look for a file named MTxxxx_Android_scatter.txt. If it is there, you are finished. If it is missing, move to Step 3. Step 3: Generating the Scatter File (If missing)
If the extracted zip doesn't contain a scatter file, you have to create one based on the device's chipset.
Use WWR MTK Tool: This is the most common utility for generating scatter files from raw firmware dumps.
Use MTK Droid Tools: An older but effective alternative for specific MediaTek chipsets.
Online Databases: Search for the specific firmware version for your device model on sites like Firmware247 or NeedROM to download just the scatter file associated with that build. Warning & Requirements
Python: Most decryption scripts require Python 3 installed on your PC.
V-B1: Ensure you have the MTK USB VCOM Drivers installed if you plan to use the scatter file for flashing.
Backup: Flashing via scatter files can wipe your device. Always backup your NVRAM/IMEI data. Converting an file is a multi-step process commonly
"Ozip File to Scatter File Converter" typically refers to a multi-stage technical process rather than a single "one-click" software. It is primarily used by enthusiasts and technicians to prepare Oppo or Realme firmware for flashing via tools like SP Flash Tool MTK Client Understanding the File Formats
: An encrypted Oppo/Realme firmware format. The first 12 bytes typically contain the header OPPOENCRYPT!
. These files cannot be flashed directly by standard third-party tools. Scatter File
map used by MediaTek-based flashing tools to identify where specific partitions (like system.img ) should be written on a device's storage. The Conversion Workflow
Converting an OZIP to a scatter-ready format usually follows these technical steps: Decryption (OZIP to ZIP) Using scripts like bkerler's ozipdecrypt , users decrypt the OZIP file into a standard ZIP format. This requires and specific libraries like Extraction (ZIP to IMG/OFP)
Once decrypted, the ZIP file is extracted to reveal internal images or occasionally an Scatter Generation Tools like MCT OFP Extractor
or specific MediaTek decryption scripts are used to process the extracted files and generate the final MT67xx_Android_scatter.txt
Users may need to manually edit the scatter file to ensure attributes for partitions like "super" images are set to for successful downloading. Key Tools & Resources bkerler/oppo_ozip_decrypt
: The industry-standard Python script for reversing OZIP encryption. tahirtaous/ozip2zip
: A simplified tool specifically for converting OZIP to recovery-flashable ZIPs. MCT OFP Extractor Encryption: Standard Zip utilities (WinRAR
: A common utility for extracting OFP packages into flashable scatter formats. Hovatek Guides
: Often provides detailed video walkthroughs for complex MediaTek firmware conversions.
Since OZIP is not a standard format, we assume the following custom layout:
| Offset | Size (bytes) | Field |
|--------|--------------|---------------------|
| 0 | 4 | Magic (OZIP) |
| 4 | 4 | Version (1) |
| 8 | 4 | Number of files (N) |
| 12 | 4 | Header size |
| 16 | Variable | File entries |
.ozip files and auto-generates a Scatter file with correct offsets.Converting an OZIP file to a Scatter file format (or more accurately, converting its contents into a format compatible with the SP Flash Tool) is essential when you want to flash Oppo or Realme firmware on a device using the SP Flash Tool. The OZIP file itself isn't directly compatible with the SP Flash Tool; you need to extract and then use the appropriate files in a Scatter file setup.
As manufacturers move away from proprietary Ozip to standard payload.bin (Android OTA) or super.img (dynamic partitions), the need for Ozip-specific converters may shrink. However, as of 2025, BBK phones still ship Ozip for stock recovery updates.
Alternative workflows:
SP Flash Tool → Write Memory → Region: EMMC_USER → Address: (from a known working scatter).ozip2payload) convert Ozip into Google’s payload.bin, then payload_dumper extracts images, and finally payload2scatter creates the scatter. This is more complex but works for v3 encryption.First, extract the contents of the OZIP file. This can usually be done with tools like 7-Zip or specific Oppo/Realme extraction tools.
Ozip (Oppo/Oplus Zip) is a proprietary archive format developed by OPPO, Realme, and OnePlus (BBK Electronics) for distributing firmware updates (OFPs or OZIPs). It is not a standard ZIP file with a different extension.
Key characteristics of Ozip:
OZIP or OPLUS) rather than PK (standard ZIP signature).