Interesting article on how Joshua REd an NAND Sdcard..
I have described the full recovery of data from an SD card that sustained extensive physical damage. I have described the process of physically connecting to the flash medium; of electrically interfacing with it; of removing the “whitening” from the data; of repairing corrupted data using the ECC information on disk; and of translating linear addresses into physical addresses as controlled by a flash translation layer.
Wow, you don't give up easily.
The "spooks" like NSA and CIA have forensic programs that reconstruct file systems almost automatically.
When I was a mint PhD physicist, I did some work on hydrodynamic modeling programs at a "weapons lab". When I finished, they shredded my computer. With people like you around, I see why.
My work was to support the modeling of weapons after the Underground Test Ban. Before the ban, some computers including the keyboard were put underground with the test device. Bet that would stop you.