If you have a backup created with , the backup format is often .pac.sc . You can convert this to a standard .pac file directly within the Infinity Box CM2 SPD software : Open Infinity CM2 SPD . Navigate to the Extra tab. Select FW Converter > Convert Infinity PAC.SC to SPRD PAC .
: Flashing a .pac file created this way will typically wipe all user data on the target device.
An Explorer pop-up window will request your structural files. Navigate to your local backup directory, pick the target container array or map configuration file, and click . 4. Define and Compile Output
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Navigate to the tab within the settings menu and clear the selection for the Partition option. Return to the primary application dashboard screen.
Identify other components like boot.bin (or .img ), recovery.bin , and system.bin .
The most reliable way to create a PAC file from individual binary images is by using the packet-extraction and packet-creation features embedded within the tool. Follow these steps carefully. Step 1: Extract a Template PAC File If you have a backup created with ,
: Wait for the tool to finish building the archive. Once "Passed" or "Complete" appears, your new .pac file is ready for use. Important Considerations
Load the remaining images (system, recovery, etc.) by matching them to the corresponding rows under the "File Name" column. Ensure all boxes for the files you want to include are . Configure Options :
This is the official archive format used by Spreadtrum (SPD) and Unisoc chipsets. A PAC file acts as a container package that bundles all the individual BIN partition files together, alongside instructions on how the flashing tool should distribute them to the device's storage. Select FW Converter > Convert Infinity PAC
Verification is complete when the progress bar finishes and displays a success message. ⚠️ Important Technical Warnings
Open ResearchDownload.exe and click the Settings (gear) icon. Load FDL Files:
So, next time you're stuck with a collection of .bin files, you won't be searching for the wrong tool. You'll be methodically and confidently building your own firmware package. That's the true power of knowing the right process.
: Used for flashing existing .pac files but often bundled with the necessary drivers.