I cannot buy 3DS themes, the error code is 009-4072. : r/3DS
SOLVED: Sd Card Slot Bad - Nintendo 2DS - iFixit
Nintendo Support: How to Lock or Unlock an SD Card
What to Do When an SD Card Is Write-Protected | Delkin Devices
SOLVED: Device thinks that SD Card is Write Protected - Nintendo 2DS - iFixit
SD card - Wikipedia
3DS SD Card Write Protection Error : r/3DS
Forensic Analysis of the Nintendo 3DS NAND - ScienceDirect
Amazon.com: 16GB SD SDHC Flash Memory Card FOR NINTENDO 3DS N3DS DS DSI & Wii Media Kit. Also compatible with Nikon SLR Coolpix Digital Camera, Kodak Easyshare, Canon Powershot, Canon EOS :
SD Card Reader says the card is write-protected | Tom's Hardware Forum