Change the filesystem be changed to FAT or FAT32 ? about uf2-samdx1

[dhalbert]

"FAT" is a generic name. The standard choices are FAT12, FAT16, FAT32, and exFAT.

However, the kind of drive reported is probably not the problem here. The UF2 "FAT" drive is a fake drive that has minimal functionality. iOS may not like it, regardless of whether it is FAT16 or not.

I have a similar iPad adapter dongle, but it does not work.
On my 6th generation iPad, it powers a CircuitPython board (PyGamer or other), but double-clicking reset does not recognize the board. I get a fast flash.
on my 9th generation iPad, I get a popup on the iPad that says the board takes too much power. The expected power consumption is something that the board reports to the USB host (the iPad, in this case).

What version of the bootloader is reported in INFO_UF2.TXT

This person says they are copying UF2's successfully using a certain app:
https://forum.makecode.com/t/using-an-iphone-to-program-circuit-playground-pybadge-it-can-be-done/15436

Note that they say they get an error message, but the copy works.