diff --git a/README.md b/README.md
index f6550f4..8b91559 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # Opencore-Steam-Deck
-An opencore EFI configuration for the steamdeck
+An opencore EFI configuration for the Steam Deck
+
+Catalina is known working with older Steam Deck BIOS versions. MacOS 11.3+ has usb issues that break booting, and newer Steam Deck BIOS verions have the same issue.