Medal of Honor Heroes cso didn't work for me under 3.52 M33 no matter what. Have tried the M33 no-UMD driver/Sony ISO loader/as well as the other oe one in recovery mode under 3.51, think it's gonna give the same result in 3.52. I have a UMD in the drive btw. Also the same game worked when I used devhook 0.52.0100 to emulate 3.11 from 1.50.
Also does it matter if I used Japanese 1.50 firmware for the initial M33CREATOR (does it even make any difference)?