for whom it may concern;
I helped someone retrieve his files.
After dissection, the motherboard turned out to be broken by two, without anything noticeable on the outside.
but what turned out:
In the ixpand flash drive 3.0, there is a micro SD card hidden in the black plastic of the USB plug. I am not sure if you can get the micro SD card out without removing the metal shell. (maybe through the small holes on the side)
I had to use recovery software because the micro SD card was not readable. It turned out to be a damaged fat32 partition, and I was able to recover everything.
So the conclusion is: Do not use, the ixpand flash drive 3.0. the motherboard is way too thin, and the device too expensive. IOS on Fat32?