Open a command prompt or terminal window inside the tool's folder.
Click the button to choose a save location for your new .pac file. Click "OK" to save the settings. Finalizing the Packaging: The tool will ask to save the changes. Click "Yes" .
: Other partition files you want to include, such as boot.img , system.img , or logo.bin .
Download a portable version of or UpgradeDownload compatible with your chipset version.
Choose . The tool will automatically read the partition headers inside the giant binary and output separate files ( boot.img , system.img , userdata.img , etc.) along with a text config file. Step 2: Compile to PAC Open your portable ResearchDownload tool. how to convert bin file to pac file portable
This guide assumes you are using a portable version of a tool like or SCI-Firmware-Factory . Step 1: Prepare Your Folder Download a portable version of a PAC creation tool.
# Pack the index entry (Offset: I, Length: I, Timestamp: Q) index_entry = struct.pack('<IIQ', data_start_offset, data_length, 0)
: You can carry these tool folders on a USB drive. However, you must still have the Spreadtrum/Unisoc USB Drivers
If the portable tool rejects your BIN file, it usually means the file size does not perfectly match the partition size defined in the configuration template. You may need to use a hex editor to trim or pad the file with zeroes. Open a command prompt or terminal window inside
Extract the downloaded ZIP archive using a portable extractor like 7-Zip Portable.
Use the -> Flash Options to save the newly arranged structure as a packaged .pac file. Troubleshooting Common Conversion Errors
Assign the .bin files to their respective partitions (e.g., assign your boot binary to the boot slot). Click to generate the .pac file. Troubleshooting Common Issues
Download a stable version of or UpgradeDownload (versions R24.0 or higher are recommended for modern Unisoc chips). Finalizing the Packaging: The tool will ask to
The most reliable and portable way to create a PAC file is by using the official or UpgradeDownload utility. These utilities run directly from an unzipped folder without installation. Step 1: Download and Extract the Tool
Tools like pacExtractor or community-developed pac-creator scripts are frequently available on development platforms like GitHub. These utilities are inherently portable. Step 2: Prepare the Working Directory
For advanced users, command-line scripts offer a highly efficient, completely portable alternative that works on both Windows and Linux without a graphical user interface (GUI).
Continue loading other available firmware components (such as recovery.img , system.img , or logo.bin ) into their corresponding slots. : Go to the Options tab and uncheck Repartition . Build the PAC File : Return to the main screen and click the Packet button.
If you want to refine your conversion or troubleshoot a specific step, tell me:
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