Oh how I know what one would give to rescue a dead sd card. Much of what I have is backed up and I long ago stopped putting any faith in flash drives. However my mother passed at the start of this year but three months before that shortly before finding her blood cancer had returned (it's not what ultimately killed her [1],) she became victim to android trying to endlessly thrust encryption over the unencrypted sd card - eventually deciding to ignore its user. My Mum realised the same day so the card was essentially empty bar the couple photos she'd just taken. I ejected the card but no luck scouring with free software for any buried files. It was a good quality sd card and I might have tried further but I've never had any luck with flash drives. Android needs a revert sd card function.

"Flash memory is used in thumb drives, smartphones, newer laptops, and SSDs. The technology exploits a phenomenon known as “quantum tunnelling” to trap electrons in floating-gate transistors, like the genies imprisoned by King Solomon. Because they have no moving parts, flash chips are generally considered to be more stable than HDDs. But their design can also complicate data recovery. "

I had hoped the article would elaborate a little more on SSD - only for the fact 9 times out of 10 I've rescued some if not all the data from HHDs that had suddenly had a problem via software the failures being head damage or my unwillingness to spend money on another control board to replace the one that had died - besides most of it was backed up. Thumb drives and sd cards I've had no luck at all - if it has died, it's dead. About the only win with sd related data was when the device was slow or misbehaving and it was placed into a newer usb port or better quality card reader.

[1] Treatment was going well as expected with other complications, but the care towards the end was lacking, people with little idea of constipation and if one is losing 3 to 5 cups of water more than they are taking in a day, there's going to be a point the body will no longer function, almost week 4 for her.