catymag, karaoke said that one should modify the 0x1b318a0 offset but you showed the 0x1b31880 being modified. I went to both offsets but there were some differences between what I've got and what you've got. In your image, you have some text like "Des yyyyyy" above, and I do not, but besides that, I am not sure if I should add the "/data/gmxt" or if the "/data/" should have already been there (and I should only add the "gmxt" ) or what. Plus, as I said, you both used different offsets (so I don't know, in which one I should do that modification) ....
this is what I've got, with both, the libgarminos.so file that you uploaded on your previous message, and in my libgarminos.so file that worked when I was on ICS 4.0.4 :