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Tpsk706spc822 Firmware Repack Guide

Navigate to the extracted filesystem. Typical changes:

Critical: Preserve file permissions and ownership. Use ls -la before and chown --reference after.

  • Verify write by reading back and comparing checksum.

    • Are you actually working with that specific device, or is this a test/example of a good query? If the former, I can help with the specific repack steps (e.g., if it uses U-Boot, OpenWrt image builder, or a vendor-specific tool).

    The TP.SK706S.PC822 is a widely used Chinese smart TV motherboard (Main Board) found in brands like Erisson, Asano, Dexp, and Neko. Repacking its firmware allows you to modify system settings, change boot logos, or port software between different brands using the same hardware. Phase 1: Preparation & Tooling

    To repack firmware for this board, you must use tools compatible with MStar processors, which power the TP.SK706S board series.

    Primary Tool: Use the mstar-bin-tool or the MstarBinTool-GUI for a more user-friendly interface. tpsk706spc822 firmware repack

    System Files: Obtain the original firmware file, typically named CtvUpgrade.bin or MstarUpgrade.bin.

    Hardware Environment: A PC running Windows or Linux with Python installed for script execution. Phase 2: Unpacking the Firmware

    Unpacking breaks the monolithic .bin file into its component partitions (e.g., system.img, boot.img, recovery.img).

    Place your firmware file (e.g., CtvUpgrade.bin) into a working directory. Open your terminal or command prompt in that directory.

    Run the following command to extract the contents:python unpack.py CtvUpgrade.bin ./unpacked/ Navigate to the extracted filesystem

    The extracted files and a configuration file (config.ini) will appear in the ./unpacked/ folder. Phase 3: Modification Once unpacked, you can modify the specific partitions:

    System Partition: Use tools to mount or unpack system.img to add/remove apps or edit build.prop.

    Boot Logo: Locate and replace the splash image within the resource partitions.

    Keys: If the firmware is encrypted, use extract_keys.py to retrieve AES/RSA keys from the MBOOT binary. Phase 4: Repacking (The "Repack")

    After modifications, you must reassemble the components into a single flashable .bin file. Critical: Preserve file permissions and ownership

    Prepare the Config: Open the config.ini generated during unpacking. Ensure the file names and sizes in the config match your modified files.

    Run the Pack Script: Use the pack.py utility to build the new image.python pack.py configs/your_config.ini

    The tool will generate a new .bin file (e.g., MyNewFirmware.bin) in the output directory. Phase 5: Flashing the Board To install your repacked firmware onto the TP.SK706S.PC822: dipcore/mstar-bin-tool - GitHub

    dd if=tpsk706spc822.bin of=header.bin bs=64 count=1 dd if=tpsk706spc822.bin of=uboot.bin bs=64 skip=1 count=127 dd if=tpsk706spc822.bin of=rootfs.squashfs bs=64 skip=128

    If the rootfs is SquashFS:

    unsquashfs rootfs.squashfs

    Modify files inside squashfs-root/ as needed.