Great job, and indeed the whole process reported is real. The Ape Escape unfortunately on the PSP needs both analog sticks, on the Vita it is possible to play it. About the PAL version with USA entry, did it work on Vita?... There is a user here interested in a PAL version that works and from what I know it works with the ppf patch application against Libcrypt found in GameCopyWorld and in PS3DEVWiki. But it would be nice if you could share your version with us. You could create a definitive Patch based on your version for everyone. Thanks.
Yes this ID actually works for DW 3. But have you tried it in DW 2003?.. It also works but the ideal is to start the game with the normal game id and after the Digimon selection part create a save in Asuka and then continue a DW2003 with the modified id... I tried this in 2003 and it actually worked, I created an Eboot of 2 disks of the DW2003 one with native id and one with the id SLES00972 so after saving in asuka I changed the disks and I started to play only on disc 2.. it worked perfectly, without crashes on the beach etc... the only problem is that the game is with the rendering of the scenarios a little slow, otherwise it was perfect. And of course by using two disks the eboot got bigger, but for nowadays, nothing that bothers.