Just about every update renders my SD card unreadable and needing to be reformatted. Why? Do you know how time consuming this is? Plus, what's the point of having expandable storage if you can't consistently keep that data on your phone?
I used a number of cards (that's easier than moving over 100 GB worth of pictures and video), including Samsung brand cards..... all have seen the same issue. It's not that the card is bad - the new update will use them if I format them each time. The problem is it's not recognizing the card until I reformat them, which would obviously erase all the data currently there, that was all completely readable prior to the update.