I'm not biased towards Japanese audio, but the English voices are painfully flat and don't compare to the level of voice work in the Japanese version of TOE, so that's why I did this. The script is 100% in English now and the audio is entirely Japanese. The only downside is that the menus aren't translated (which is no big deal even if you can't read Kana (which barely takes a month for anyone to learn)).

At any rate, your original suggestion didn't work; it said:

"Error! Next available LBA position is 53 but LBA [\\PSP_GAME\\ICON1.PMF] position is 46!"

Actually the original Japanese ISO was already bigger than the translated one, so I tried importing the LBA positions from the original ISO into the translated one. That didn't work either, sadly. I just had the same kind of error but on a different file.

No way, UPS isn't designed for space shifted files. As Majutsuko noted, it results in unbelievable patch sizes. I'm shocked that it was over 800MB -- that should technically be impossible.

Perhaps try xdelta or bsdiff? If both of those fail, not sure. Maybe it would be best to break apart the ISO and distribute patches for each file. Perhaps with a script to apply all patches in one shot.

The only thing I can suggest now is to manually adjust each LBA until the both ISOs are exactly the same size. It will probably take some time, but with enough effort you'll be able to make an LBA position file that works on both ISOs.

It could be because the two isos didn't have the same bytes, that could be the reason that makes
the lba utility to crash. It seems that to dummy the iso is your best bet, at least to match exactly the same size of the original file, after that you can realign the lba and make the ppf patch.