: Essential bootloader files (usually fdl1.bin and fdl2.bin ).

: Flashing a .pac file created this way will typically wipe all user data on the target device.

A "Packet" dialog will appear. Enter a (phone model) and Product Version (build number).

In the same settings menu, you will see a list of partitions (system, recovery, boot, etc.).

You can use the SPD Research Download Tool or SPD Upgrade Tool to create a custom firmware package. 1. Prepare the Tool Environment Download and extract the .

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 .

Launch ResearchDownload.exe and click the icon. Go to the Download tab.

Select your backup file and choose a destination to save the standard .pac firmware. Important Warnings

In this context, a .bin file is typically a raw binary image of a single partition (like recovery.bin or boot.bin ), while a .pac file is a unified containing all the necessary images to flash a device from scratch. Prerequisites for Conversion