It’s funny how Polyend categorically refuse to acknowledge there are issues with their SD cards. Even more absurd is seeing other forum users insist this is “normal” and that you should just not use the factory card.
For me, this is the first time in my life an SD card has failed. I’ve honestly never dealt with this before. The unit is only a couple of years old, and the SD card has been removed from the device only a few times.
So either Polyend’s supplier provided them with genuinely trash SD cards, or the Polyend hardware is somehow killing the cards.