I was able to get Kingdom Hearts to run on my r4ultra.
What I used and did was...
1) Got r4ultra 1.54 kernel, extracted the files to sd card,
2) Got Akaio 1.4.1 Proper, extracted the files and put them on sd card.
a)You can download a file with both in same folder just google AKAIO 1.4.1 PROPER...