Dynamically detect bad pages and recover from flash memory errors?

[dmiddlecamp]

Would it be possible to add a recovery / testing step during something like a factory reset that tests the external flash memory to find misbehaving / damaged pages, and then move the OTA backup / storage addresses?

This has been a relatively rare failure case I've seen in the wild (less than 10 units), but we could also potentially recover from it purely with software, and potentially it might help us add an abstraction layer on that memory. It could help with reliability for user firmware as well.

Maybe a crazy idea, given the application / ram space, but maybe down the road?