But I still do wonder if it's really related to cooked mmc and not messed partition table.

anyone knows how to restore original table and got correct mappings?

I's black n950 / RM680 in generally good condition (it got dent on case and volume buttons[very hard to press, but I guess I could buy casing cheaply from somebody with broken screen). I really loved my N9 and would like to adopt this phone too...