hey my friend
I find that very strange memor32 doesn't work on the SCPH-79010
Have you checked on the official memor32 site to see if any one there has same model PS2 and or any issues with it.
Good luck with your search anyway and hope you get it going.
The problem with any one else making a firmware for mc is that they would have to have a way to flash it too mc , as like the memor32 card has usb support.