I've also tried formatting it to btrfs and exFAT, which just wouldn't work with steam at all. Everytime i try to download something, it always stops after 10 minutes, saying that it failed to write it on the SD Card. And with ext4, it's even worse, it just completely refuses to mount, no matter what. Help would be appreciated, the first screenshot is from when I tried to mount it, and the second one is from when I formatted it to ext4.