Something might be wrong with my Chihiro now. I can't get it to boot any version of WMMT. The ones that allow linking just hang on the PCB ID checking screen at boot and the Export version of WMMT1 boots and gets beyond the initialization and goes through all startup screens, and then goes black. This is without the card reader even plugged up and setting wheel and card reader to off in the settings... I'm back in 512MB mode, too and it was working for me in that mode before. This is unfortunate because I just invested money into a reader.
I confirmed that OR2SP still boots and plays fine, so not sure what could be wrong.