This script removes ECC data from an ECC-protected file, such as the FIT image contained in the linux partition of the eMMC of the User Terminal
After extracting the linux partition for the first time you should be able to find two binaries in the ramdisk, ecc and unecc which can be used to, respectively, repack the partition after modifications were made, and check for errors while unpacking ECC-protected files.
A detailed description of how the ECC mechanism from SpaceX works can be found in the blogpost.
python unecc.py /path/to/input_file /path/to/output_fileIf some assertions in the code should fail during extraction, it probably means that the file is not correctly formatted.