I have a ps2 Phat with free mcboot loaded on my MC, and it works fine. I have a friend with a slim PS2 (SCPH-70012)(V13) and as far I understand it should work. The free McBoot loads fine on the slim, but when I go to load a game the ESR Beta R9 screen loads up then nothing, even after a few minutes.
Its got free mcboot version 1.8b.
If anyone has any ideas the would be sweet.