I can edit it for ya but is this also a typo or am I misreading... from the few posts above, it sounds like the "jp" folder in THIS guide should be "ja" not jp. If this is correct, let me know and I will update the post.
there are some unhandled errors in skitfix, like creating and deleting the unpack folders in skitfixdir. It started out as a batch script, thats why it is so buggy. I will update it soon, looks like it doesn't work for anyone yet
After you repacked the chd files, you will need to compress them as the cpk size would be over 2GB. You can use CriPackedFileMaker for this (make a new cpk that contains the new files then extract it with the edited bms script).
OK, just making sure of the steps. After we get the new chd files, only the chd files should be repacked into a new cpk file using CriPackedFileMaker. Afterwards, we can use the modified script with bms to extract the chd files from the newly created cpk file. Now the chd files should be in compressed size and can be mixed into the actual mixed rootR.cpk directory to be repacked using cpkcr.