: To use this, place it in a folder with all other parts. Right-click "part01" and select "Extract Here." The software will automatically pull data from part09 when it reaches that point in the sequence.

: This is a well-known handle for a specific encoder/uploader popular on sites like YTS or various forums, known for high-quality rips.

Do you have the of this archive, or are you trying to fix a checksum error specifically with Part 09?

: Often refers to the specific source or format—in this case, it likely points to an IMAX version of a film, which features a taller aspect ratio. 4K : Indicates the video resolution is pixels (Ultra High Definition).