diff --git a/_pages/2.1.0-ctrtransfer.md b/_pages/2.1.0-ctrtransfer.md
index f6bbd2746e..a7a8f69e4c 100644
--- a/_pages/2.1.0-ctrtransfer.md
+++ b/_pages/2.1.0-ctrtransfer.md
@@ -12,6 +12,9 @@ Your device may not show your installed games after the ctrtransfer. This is due
 Never format a 2DS while on a version <6.0.0 or you will be unable to complete initial setup and will BRICK!
 {: .notice--danger}
 
+Never update a New 3DS running 2.1.0 (an Old 3DS firmware) or you will BRICK! You MUST restore a NAND backup or ctrtransfer back to standard New 3DS firmware first!
+{: .notice--danger}
+
 #### Overview of steps
 
 In this section, we will be flashing your console's [CTRNAND](https://www.3dbrew.org/wiki/Flash_Filesystem#CTR_partition) partition to 2.1.0 in order to take advantage of an oversight in 2.1.0 for the purpose of extracting the [OTP](otp-info) unique to your console. This OTP file is required to install arm9loaderhax, and **cannot** be shared with other consoles.