diff --git a/_pages/2.1.0-ctrtransfer.md b/_pages/2.1.0-ctrtransfer.md
index 463d627ee7..51b2adfadf 100644
--- a/_pages/2.1.0-ctrtransfer.md
+++ b/_pages/2.1.0-ctrtransfer.md
@@ -6,6 +6,9 @@ permalink: /2.1.0-ctrtransfer.html
 If you downgrade to 2.1.0 on a 2DS or New 3DS and left Wireless Communication off, you can re-enable the wireless by removing the battery for several seconds then booting back up.
 {: .notice--info}
 
+If you've been using the New 3DS's microSD Management to transfer files to your SD card, this will no longer work on 2.1.0, make sure to have a microSD card reader on hand before proceeding.
+{: .notice--info}
+
 Your device may not show your installed games after the ctrtransfer. This is due to the tickets being removed by the transfer, which is why you back them up. They will be restored at the end of the guide.
 {: .notice--info}