Disclaimer: This may void warranty and the risk is up to you. Only do this, if you are confident with eletronics and hacking.
Be carefull with all the ribbon cables!
0.) Shop
something like this sd card extension: https://amzn.eu/d/bCNWuF2
1.) Unscrew and open
Unscrew:
-
six screws on the front underside
-
six screws in the upper back
-
the black plastic panels on both sides
-
the upper screws behinde the black plastic panels
Open your X32 like a book:
2.) Unscrew the XLR Output Board and get it out of the way
3.) (optional) Remove X32 CPU Board - be aware of the long screw and the brass spacer!)
4.) fish the sd card extension trough the extension bay
5.) Remove stock sd card and attach sd card extension (Here shown with removed main cpu board. You may be able to do it without removing the board.)
6.) Screw all back together. Insert your stock sd card in the extension 
7.) Now you have a user/hacker serviceable (internal) main sd card.
